[asan] Fix -Winvalid-paste error with clang-cl
We don't need to paste tokens here. String literal concatenation works
just fine here with MSVC and Clang.
// VS2015 dynamic CRT (MD) work.
#if SANITIZER_WINDOWS
#define CXX_OPERATOR_ATTRIBUTE
-#define COMMENT_EXPORT(sym) __pragma(comment(linker, "/export:"##sym))
+#define COMMENT_EXPORT(sym) __pragma(comment(linker, "/export:" sym))
#ifdef _WIN64
COMMENT_EXPORT("??2@YAPEAX_K@Z") // operator new
COMMENT_EXPORT("??2@YAPEAX_KAEBUnothrow_t@std@@@Z") // operator new nothrow
