[sanitizers] Fix build on macOS with LogFullErrorReport redefinition error.

macOS has implementation of LogFullErrorReport and

    INLINE void LogFullErrorReport(const char *buffer) {}

was causing

> compiler-rt/lib/sanitizer_common/sanitizer_mac.cc:658:6: error: redefinition of 'LogFullErrorReport'

Fixup for r355236.

rdar://problem/48526020

llvm-svn: 355244

Author: vsapsai

compiler-rt/lib/sanitizer_common/sanitizer_common.h

@@ -810,7 +810,7 @@ void WriteToSyslog(const char *buffer);
 #define SANITIZER_WIN_TRACE 0
 #endif
 
-#if SANITIZER_LINUX || SANITIZER_WIN_TRACE
+#if SANITIZER_MAC || SANITIZER_WIN_TRACE
 void LogFullErrorReport(const char *buffer);
 #else
 INLINE void LogFullErrorReport(const char *buffer) {}