releaseTextures portion of GrDrawState Ref textures CL (http://codereview.appspot.com/6251049/)

http://codereview.appspot.com/6299081/



git-svn-id: http://skia.googlecode.com/svn/trunk@4254 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrDefaultTextContext.cpp b/src/gpu/GrDefaultTextContext.cpp
index d3d4e52..21cb990 100644
--- a/src/gpu/GrDefaultTextContext.cpp
+++ b/src/gpu/GrDefaultTextContext.cpp
@@ -61,6 +61,7 @@
                                           4, 6);
         fVertices = NULL;
         this->INHERITED::reset();
+        drawState->setTexture(kGlyphMaskStage, NULL);
     }
 }