Microsoft's __uuidof operator implementation part 1.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113356 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.cpp b/lib/Sema/Sema.cpp
index 17817d4..60e8c14 100644
--- a/lib/Sema/Sema.cpp
+++ b/lib/Sema/Sema.cpp
@@ -138,7 +138,7 @@
     CompleteTranslationUnit(CompleteTranslationUnit),
     NumSFINAEErrors(0), SuppressAccessChecking(false),
     NonInstantiationEntries(0), CurrentInstantiationScope(0), TyposCorrected(0),
-    AnalysisWarnings(*this)
+    AnalysisWarnings(*this), MSVCGuidDecl(0)
 {
   TUScope = 0;
   if (getLangOptions().CPlusPlus)