[PATCH] X86AsmPrinter::GetCPISymbol() skip MSVC special case if outputting ELF for MCJIT

[David Majnemer]

Why do you think the `dyn_cast<MCSectionCOFF>()` is invalid? It's supposed to return `NULL` if the section isn't a COFF section (i.e. if it's an ELF section).

http://reviews.llvm.org/D5773