[sanitizer] Fix sanitizer_common compile errors on gcc trunk

Summary:
When testing a merge of compiler-rt r304709 into gcc trunk on x86-64-pc-linux-gnu,
I ran into two compile errors:
sanitizer_common/sanitizer_symbolizer_libbacktrace.cc:96:73: error: no matching function for call to '__sanitizer::AddressInfo::FillModuleInfo(char*&, __sanitizer::uptr&)'

All other files in sanitizer_common (with the exception of sanitizer_malloc_mac.inc
which is special) include sanitizer_platform.h without directory name.

Patch by Mike Jongen

Reviewers: kcc, vitalybuka

Reviewed By: kcc

Subscribers: kubamracek, fedor.sergeev, llvm-commits

Differential Revision: https://reviews.llvm.org/D33933

llvm-svn: 317608