Suppress dumb warning.



git-svn-id: http://skia.googlecode.com/svn/trunk@4120 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/effects/GrMorphologyEffect.cpp b/src/gpu/effects/GrMorphologyEffect.cpp
index 614ef32..906758d 100644
--- a/src/gpu/effects/GrMorphologyEffect.cpp
+++ b/src/gpu/effects/GrMorphologyEffect.cpp
@@ -97,6 +97,7 @@
             break;
         default:
             GrCrash("Unexpected type");
+            func = ""; // suppress warning
             break;
     }