Projects: fail to load saved base address properly

[XVilka]

Tested it on rizin 0.6.2 @ windows-x86-64 commit: 18b1243.
It has the same base address issue.

Steps:

1. Load a binary with -B specifying an address
2. idp to load the PDB file (not sure this is actually relevant)
3. aaa to analyze the binary
4. Ps to save the project
5. Exit rizin and load the project with -p
6. afl output shows correct adresses (maybe because of the PDB info?)
7. pdf-ing a function results in all "invalid" instructions
8. px-ing the same address shows all FF's

Originally posted by @elicn in #4296 (comment)

[XVilka]

Likely related to #713 and #714

[elicn]

I forgot to mention "aaa to analyze the binary".
That should be added between steps 2 and 3 above.