Fix Coverity reports.  (Mostly use of uninitialised values.)

CID=537,103419,103631,103632,103633

Initial review: https://codereview.appspot.com/5936047/

Review URL: https://codereview.appspot.com/5935051

git-svn-id: http://skia.googlecode.com/svn/trunk@3534 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/ports/SkFontHost_FreeType.cpp b/src/ports/SkFontHost_FreeType.cpp
index 55845dc..b16f781 100644
--- a/src/ports/SkFontHost_FreeType.cpp
+++ b/src/ports/SkFontHost_FreeType.cpp
@@ -1024,7 +1024,7 @@
         return;
     }
 
-    SkFixed vLeft, vTop;
+    SkFixed vLeft = 0, vTop = 0;
 
     switch ( fFace->glyph->format ) {
       case FT_GLYPH_FORMAT_OUTLINE: {
@@ -1116,7 +1116,7 @@
         }
 
         // bounding box of the unskewed and unscaled glyph
-        FT_BBox bbox;
+        FT_BBox bbox = {0, 0, 0, 0};  // Suppress Coverity warning.
         getBBoxForCurrentGlyph(glyph, &bbox);
 
         // compute the vertical gap above and below the glyph if the glyph were