Always initialize variable. If opening quote is the last character in comment, we will be using an uninitialized value. There is already a test for that in unittests/AST/CommentLexer.cpp, but it seems like we were lucky with the value that got loaded into the variable so the test passed.

llvm-svn: 160133

clang/include/clang/AST/CommentLexer.h

@@ -509,7 +509,7 @@ public:
       } else
         Error = true;
     }
-    char C;
+    char C = '\0';
     while (!Error && !isEnd()) {
       C = peek();
       WordText.push_back(C);