Fix the bug when the children is 0 and < Button > has icon prop , the width of component is wrong.

[951565664]

Fix the bug when the children is 0 and < Button > has icon prop , the width of component is wrong.

bug demo: https://codesandbox.io/s/0146v1lxkl

First of all, thank you for your contribution! :-)

Please makes sure that these checkboxes are checked before submitting your pull request, thank you!

• Make sure that you propose pull request to right branch: bugfix for master, feature for branch feature.
• Make sure that you follow antd's code convention.
• Run npm run lint and fix those errors before submitting in order to keep consistent code style.
• Rebase before creating a pull request to keep commit history clear.
• Add some descriptions and refer relative issues for you pull request.

Extra checklist:

if isBugFix :

• Make sure that you add at least one unit test for the bug which you had fixed.

I am sorry that I have not been able to add a unit test because the enzyme cannot get the width of the component enzymejs/enzyme#1940

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[codecov]

Codecov Report

Merging #13596 into master will decrease coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #13596      +/-   ##
==========================================
- Coverage   93.63%    93.6%   -0.04%     
==========================================
  Files         314      314              
  Lines        6631     6631              
  Branches     1767     1767              
==========================================
- Hits         6209     6207       -2     
- Misses        410      412       +2     
  Partials       12       12

Impacted Files	Coverage Δ
components/button/button.tsx	93.4% <100%> (ø)	⬆️
components/upload/UploadList.tsx	88.49% <0%> (-1.77%)	⬇️

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
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[codecov]

Codecov Report

Merging #13596 into master will decrease coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #13596      +/-   ##
==========================================
- Coverage   93.63%    93.6%   -0.04%     
==========================================
  Files         314      314              
  Lines        6631     6631              
  Branches     1767     1767              
==========================================
- Hits         6209     6207       -2     
- Misses        410      412       +2     
  Partials       12       12

Impacted Files	Coverage Δ
components/button/button.tsx	93.4% <100%> (ø)	⬆️
components/upload/UploadList.tsx	88.49% <0%> (-1.77%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2a66546...d3d8d03. Read the comment docs.

[codecov]

Codecov Report

Merging #13596 into master will decrease coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #13596      +/-   ##
==========================================
- Coverage   93.63%    93.6%   -0.04%     
==========================================
  Files         314      314              
  Lines        6631     6631              
  Branches     1767     1767              
==========================================
- Hits         6209     6207       -2     
- Misses        410      412       +2     
  Partials       12       12

Impacted Files	Coverage Δ
components/button/button.tsx	93.4% <100%> (ø)	⬆️
components/upload/UploadList.tsx	88.49% <0%> (-1.77%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2a66546...d3d8d03. Read the comment docs.

[codecov]

Codecov Report

Merging #13596 into master will decrease coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #13596      +/-   ##
==========================================
- Coverage   93.65%    93.6%   -0.05%     
==========================================
  Files         314      314              
  Lines        6646     6631      -15     
  Branches     1742     1767      +25     
==========================================
- Hits         6224     6207      -17     
- Misses        411      412       +1     
- Partials       11       12       +1

Impacted Files	Coverage Δ
components/button/button.tsx	93.4% <100%> (ø)	⬆️
components/radio/group.tsx	90.38% <0%> (-4.17%)	⬇️
components/badge/index.tsx	98.5% <0%> (-1.5%)	⬇️
components/table/SelectionCheckboxAll.tsx	92.3% <0%> (-0.29%)	⬇️
components/cascader/index.tsx	97.42% <0%> (-0.07%)	⬇️
components/badge/ScrollNumber.tsx	96.72% <0%> (-0.06%)	⬇️
components/menu/MenuItem.tsx	94.73% <0%> (ø)	⬆️
components/menu/index.tsx	94.06% <0%> (ø)	⬆️
components/menu/SubMenu.tsx	92.85% <0%> (ø)	⬆️
components/date-picker/WeekPicker.tsx	93.33% <0%> (+0.09%)	⬆️
... and 2 more

---

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Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1fb7bac...e980539. Read the comment docs.