[PATCH] Fix for #pragma warning to work correctly with "1-4:" specifiers

[Andrey Bokhanko]

Reid, thank you for the review!

I fixed the use-after-free bug you found (good catch, BTW!) I also created a test that checks -E (not sure this is exactly what you wanted; let me know if I misunderstood you).


http://reviews.llvm.org/D9856

Files:
  lib/Lex/Pragma.cpp
  test/Preprocessor/pragma_microsoft.c
  test/Preprocessor/pragma_microsoft_E.c

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