Fix missing case for declarations in glslang AST dump

Cleans up some noise that appears in dumps of pretty much every GLSL
shader.

Change-Id: I602a6356110803e30fcd8ba9818e56efa70bf5d6
Reviewed-on: https://swiftshader-review.googlesource.com/20769
Tested-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
diff --git a/src/OpenGL/compiler/intermOut.cpp b/src/OpenGL/compiler/intermOut.cpp
index 718f014..5a8ebc5 100644
--- a/src/OpenGL/compiler/intermOut.cpp
+++ b/src/OpenGL/compiler/intermOut.cpp
@@ -321,6 +321,8 @@
 	case EOpMul:           out << "component-wise multiply"; break;
 	case EOpOuterProduct:  out << "outer product";           break;
 
+	case EOpDeclaration:   out << "Declaration"; break;
+
 	default: out.message(EPrefixError, "Bad aggregation op");
 	}