[sanitizer_common] Fix StripFunctionName() on Windows

Also implement StripFunctionName() on Windows to properly strip
interceptor prefixes.

Reported-by: https://lab.llvm.org/buildbot#builders/127/builds/48810
GitOrigin-RevId: 4c46c7cef3791a410cf226f7f005231be35dd8b9
1 file changed