Fix memory leak in SkPDFType1Font

src/pdf/SkPDFFont.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <ctype.h>
 
 #include "SkData.h"
@@ skipping 1294 matching lines @@
     }
 
     SkAutoTUnref<SkPDFDict> descriptor(new SkPDFDict("FontDescriptor"));
     setFontDescriptor(descriptor.get());
 
     int ttcIndex;
     size_t header SK_INIT_TO_AVOID_WARNING;
     size_t data SK_INIT_TO_AVOID_WARNING;
     size_t trailer SK_INIT_TO_AVOID_WARNING;
     SkAutoTUnref<SkStream> rawFontData(typeface()->openStream(&ttcIndex));
-    SkData* fontData = handle_type1_stream(rawFontData.get(), &header, &data,
-                                           &trailer);
-    if (fontData == NULL) {
+    SkAutoTUnref<SkData> fontData(handle_type1_stream(rawFontData.get(), &header,
+                                                      &data, &trailer));
+    if (fontData.get() == NULL) {
         return false;
     }
     if (canEmbed()) {
-        SkAutoTUnref<SkPDFStream> fontStream(new SkPDFStream(fontData));
+        SkAutoTUnref<SkPDFStream> fontStream(new SkPDFStream(fontData.get()));
         addResource(fontStream.get());
         fontStream->insertInt("Length1", header);
         fontStream->insertInt("Length2", data);
         fontStream->insertInt("Length3", trailer);
         descriptor->insert("FontFile",
                            new SkPDFObjRef(fontStream.get()))->unref();
     }
 
     addResource(descriptor.get());
     insert("FontDescriptor", new SkPDFObjRef(descriptor.get()))->unref();
@@ skipping 158 matching lines @@
 
     insert("FontBBox", makeFontBBox(bbox, 1000))->unref();
     insertInt("FirstChar", 1);
     insertInt("LastChar", lastGlyphID() - firstGlyphID() + 1);
     insert("Widths", widthArray.get());
     insertName("CIDToGIDMap", "Identity");
 
     populateToUnicodeTable(NULL);
     return true;
 }