fix leak of Light object (in this private instance, the caller is transferring
ownership of the object, so the receive does not need to call ref).
Review URL: https://codereview.appspot.com/6348045

git-svn-id: http://skia.googlecode.com/svn/trunk@4360 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkLightingImageFilter.cpp b/src/effects/SkLightingImageFilter.cpp
index 25c92b7..c4a6896 100644
--- a/src/effects/SkLightingImageFilter.cpp
+++ b/src/effects/SkLightingImageFilter.cpp
@@ -430,7 +430,8 @@
     fSurfaceScale(SkScalarDiv(surfaceScale, SkIntToScalar(255)))
 {
     SkASSERT(fLight);
-    fLight->ref();
+    // our caller knows that we take ownership of the light, so we don't
+    // need to call ref() here.
 }
 
 SkImageFilter* SkLightingImageFilter::CreateDistantLitDiffuse(