Fixed uniform block indexing

A uniform block's qualifier is generally a uniform, so
we have to change that to a temporary in order to be
able to us it as the result of the indexing operation.

Change-Id: I2f5ba7f966e8eaab314322edfa0483a9f24bfbdb
Reviewed-on: https://swiftshader-review.googlesource.com/4543
Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>

src/OpenGL/compiler/ParseHelper.cpp

diff --git a/src/OpenGL/compiler/ParseHelper.cpp b/src/OpenGL/compiler/ParseHelper.cpp
index 522b13e..8e41c3f 100644
--- a/src/OpenGL/compiler/ParseHelper.cpp
+++ b/src/OpenGL/compiler/ParseHelper.cpp
@@ -2339,7 +2339,7 @@
 		}
 		else if(baseType.isInterfaceBlock())
 		{
-			TType copyOfType(baseType.getInterfaceBlock(), baseType.getQualifier(), baseType.getLayoutQualifier(), 0);
+			TType copyOfType(baseType.getInterfaceBlock(), EvqTemporary, baseType.getLayoutQualifier(), 0);
 			indexedExpression->setType(copyOfType);
 		}
 		else