Re-enable optimization for detecting nop state changes in fragment
and vertex programs.

Change-Id: Ic5b9ecf564d121d7a00a1eed92afb4c4783ce8bc
diff --git a/rsProgramVertex.cpp b/rsProgramVertex.cpp
index b8d1461..85d90c7 100644
--- a/rsProgramVertex.cpp
+++ b/rsProgramVertex.cpp
@@ -221,7 +221,7 @@
 {
     //LOGE("sgl2 vtx1 %x", glGetError());
     if ((state->mLast.get() == this) && !mDirty) {
-        //return;
+        return;
     }
 
     rsc->checkError("ProgramVertex::setupGL2 start");