HLSL: Add shape conversions for return values.

glslang/Include/revision.h

@@ -2,5 +2,5 @@
 // For the version, it uses the latest git tag followed by the number of commits.
 // For the date, it uses the current date (when then script is run).
 
-#define GLSLANG_REVISION "Overload400-PrecQual.1556"
+#define GLSLANG_REVISION "Overload400-PrecQual.1559"
 #define GLSLANG_DATE "06-Oct-2016"

glslang/MachineIndependent/Intermediate.cpp

@@ -768,6 +768,7 @@ TIntermTyped* TIntermediate::addShapeConversion(TOperator op, const TType& type,
     case EOpEqual:
     case EOpNotEqual:
     case EOpFunctionCall:
+    case EOpReturn:
         break;
     default:
         return node;