Add whitespace to silence the following warning in a Release build: warning: suggest a space before ';' or explicit braces around empty body in 'while' statement

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61820 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseExprCXX.cpp b/lib/Parse/ParseExprCXX.cpp
index 88ca915..d05c002 100644
--- a/lib/Parse/ParseExprCXX.cpp
+++ b/lib/Parse/ParseExprCXX.cpp
@@ -526,7 +526,7 @@
     return true;
   }
   
-  while (ParseOptionalTypeSpecifier(DS, isInvalid, PrevSpec));
+  while (ParseOptionalTypeSpecifier(DS, isInvalid, PrevSpec)) ;
 
   return false;
 }