Fix minor valgrind-found memory leaks

https://codereview.chromium.org/12440066/



git-svn-id: http://skia.googlecode.com/svn/trunk@8297 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/PDFPrimitivesTest.cpp b/tests/PDFPrimitivesTest.cpp
index cc89d6b..7f6bc34 100644
--- a/tests/PDFPrimitivesTest.cpp
+++ b/tests/PDFPrimitivesTest.cpp
@@ -225,7 +225,7 @@
 // and there is no assert on input data in Debug mode.
 static void test_issue1083() {
     SkISize pageSize = SkISize::Make(100, 100);
-    SkPDFDevice* dev = new SkPDFDevice(pageSize, pageSize, SkMatrix::I());
+    SkAutoTUnref<SkPDFDevice> dev(new SkPDFDevice(pageSize, pageSize, SkMatrix::I()));
 
     SkCanvas c(dev);
     SkPaint paint;