Fix leak in BlurTest

https://codereview.chromium.org/26941002/



git-svn-id: http://skia.googlecode.com/svn/trunk@11725 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/BlurTest.cpp b/tests/BlurTest.cpp
index 8eb1050..97e267e 100644
--- a/tests/BlurTest.cpp
+++ b/tests/BlurTest.cpp
@@ -183,6 +183,9 @@
     for ( ; i < resultCount; ++i) {
         result[i] = 0;
     }
+
+    SkMask::FreeImage(src.fImage);
+    SkMask::FreeImage(dst.fImage);
 }
 
 // Implement a step function that is 255 between min and max; 0 elsewhere.