[Rule] Not all If branches define variable

[bhirsz]

If new variable is set in If, it should be set in all branches:

 IF  ${True}
     ${var}  Set Variable  value
ELSE
     ${var}  Set Variable  other value 
END

[bhirsz]

Only potential issue is global variable with default value that can be overwriten if one condition is true. But it is still better to be explicit and set it in every branch.