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/Matrix44Test.cpp b/tests/Matrix44Test.cpp
index 269e359..bdeafd4 100644
--- a/tests/Matrix44Test.cpp
+++ b/tests/Matrix44Test.cpp
@@ -80,6 +80,8 @@
 static void test_constructor(skiatest::Reporter* reporter) {
     // Allocate a matrix on the heap
     SkMatrix44* placeholderMatrix = new SkMatrix44();
+    SkAutoTDelete<SkMatrix44> deleteMe(placeholderMatrix);
+
     for (int row = 0; row < 4; ++row) {
         for (int col = 0; col < 4; ++col) {
             placeholderMatrix->setDouble(row, col, row * col);