Disable static caching of dyld header on Go sanitizers

This causes buildbot failures due to undefined __cxa_guard_acquire

llvm-svn: 302681

compiler-rt/lib/sanitizer_common/sanitizer_procmaps_mac.cc

@@ -227,8 +227,12 @@ static const struct mach_header *get_dyld_image_header() {
 // and it is expensive to compute once many libraries have been loaded,
 // so cache it here and do not reset.
 static const struct mach_header *get_dyld_hdr() {
+#if !SANITIZER_GO
   static const struct mach_header *header = get_dyld_image_header();
   return header;
+#else
+  return get_dyld_image_header();
+#endif
 }
 
 void MemoryMappingLayout::GetSegmentAddrRange(uptr *start, uptr *end,