Fix comma operator precedence.

TRAC #20059
ISSUE=290
Signed-off-by: Daniel Koch
Author: Nicolas Capens

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1009 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/compiler/OutputHLSL.cpp b/src/compiler/OutputHLSL.cpp
index 355c2b7..69b8c26 100644
--- a/src/compiler/OutputHLSL.cpp
+++ b/src/compiler/OutputHLSL.cpp
@@ -1285,7 +1285,7 @@
             return false;
         }
         break;
-      case EOpComma:            outputTriplet(visit, "", ", ", "");                break;
+      case EOpComma:            outputTriplet(visit, "(", ", ", ")");                break;
       case EOpFunction:
         {
             TString name = TFunction::unmangleName(node->getName());