Make sure to flush raw_string_ostream, from John Thompson

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83066 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/CodeCompleteConsumer.cpp b/lib/Sema/CodeCompleteConsumer.cpp
index a3d4d92..a8988a6 100644
--- a/lib/Sema/CodeCompleteConsumer.cpp
+++ b/lib/Sema/CodeCompleteConsumer.cpp
@@ -92,7 +92,7 @@
     case CK_Informative: OS << "[#" << C->Text << "#]"; break;
     }
   }
-  
+  OS.flush();
   return Result;
 }