Maybe consider removing this workaround? The original problem report indicated
that it didn't affect later versions:
src/backend/optimizer/path/costsize.c: /* This apparently-useless variable dodges a compiler bug in VS2013: */
I'm not sure if it's worth removing this one, though:
src/port/strtof.c: * On Windows, there's a slightly different problem: VS2013 has a strtof()
