Fix TableColorFilter memory leak.

http://codereview.appspot.com/6437045/



git-svn-id: http://skia.googlecode.com/svn/trunk@4733 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/SkTableColorFilter.cpp b/src/effects/SkTableColorFilter.cpp
index fb9aaa6..d6cbb5e 100644
--- a/src/effects/SkTableColorFilter.cpp
+++ b/src/effects/SkTableColorFilter.cpp
@@ -31,6 +31,10 @@
         }
     }
 
+    virtual ~SkTable_ColorFilter() {
+        SkDELETE(fBitmap);
+    }
+
     virtual bool asComponentTable(SkBitmap* table) SK_OVERRIDE;
 
     virtual void filterSpan(const SkPMColor src[], int count,