Fix minor cppcheck-found issues

src/ports/SkFontHost_mac.cpp

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <vector>
 #ifdef SK_BUILD_FOR_MAC
@@ skipping 326 matching lines @@
     AutoCFRelease<CGContextRef> fCG;
     SkISize fSize;
     bool fDoAA;
     bool fDoLCD;
 
     static int RoundSize(int dimension) {
         return SkNextPow2(dimension);
     }
 };
 
-Offscreen::Offscreen() : fRGBSpace(NULL), fCG(NULL) {
+Offscreen::Offscreen() : fRGBSpace(NULL), fCG(NULL), 
+                         fDoAA(false), fDoLCD(false) {
     fSize.set(0, 0);
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static SkTypeface::Style computeStyleBits(CTFontRef font, bool* isFixedPitch) {
     unsigned style = SkTypeface::kNormal;
     CTFontSymbolicTraits traits = CTFontGetSymbolicTraits(font);
 
     if (traits & kCTFontBoldTrait) {
@@ skipping 1520 matching lines @@
             return NULL;
         }
         return create_from_dataProvider(pr);
     }
 };
 
 SkFontMgr* SkFontMgr::Factory() {
     return SkNEW(SkFontMgr_Mac);
 }
 #endif