"Fix" compiler issue in SkRandomScalerContext

src/fonts/SkRandomScalerContext.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkRandomScalerContext.h"
 #include "SkGlyph.h"
 #include "SkPath.h"
@@ skipping 42 matching lines @@
     return fProxy->charToGlyphID(uni);
 }
 
 void SkRandomScalerContext::generateAdvance(SkGlyph* glyph) {
     fProxy->getAdvance(glyph);
 }
 
 void SkRandomScalerContext::generateMetrics(SkGlyph* glyph) {
     // Here we will change the mask format of the glyph
     // NOTE this is being overridden by the base class
-    SkMask::Format format;
+    SkMask::Format format = SkMask::kARGB32_Format; // init to handle defective compilers
     switch (glyph->getGlyphID() % 4) {
         case 0:
             format = SkMask::kLCD16_Format;
             break;
         case 1:
             format = SkMask::kA8_Format;
             break;
         case 2:
             format = SkMask::kARGB32_Format;
             break;
@@ skipping 173 matching lines @@
 
 int SkRandomTypeface::onGetTableTags(SkFontTableTag tags[]) const {
     return fProxy->getTableTags(tags);
 }
 
 size_t SkRandomTypeface::onGetTableData(SkFontTableTag tag, size_t offset,
                                     size_t length, void* data) const {
     return fProxy->getTableData(tag, offset, length, data);
 }