ARM Skia NEON patches - 09 - Bugfix

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 208 matching lines @@
             new SkMemoryStream(*headerLen + *dataLen + *trailerLen);
         memcpy((char*)result->getAtPos(), src, *headerLen);
         result->seek(*headerLen);
 
         const uint8_t* hexData = src + *headerLen;
         const uint8_t* trailer = hexData + hexDataLen;
         size_t outputOffset = 0;
         uint8_t dataByte = 0;  // To hush compiler.
         bool highNibble = true;
         for (; hexData < trailer; hexData++) {
-            char curNibble = hexToBin(*hexData);
+            int8_t curNibble = hexToBin(*hexData);
             if (curNibble < 0) {
                 continue;
             }
             if (highNibble) {
                 dataByte = curNibble << 4;
                 highNibble = false;
             } else {
                 dataByte |= curNibble;
                 highNibble = true;
                 ((char *)result->getAtPos())[outputOffset++] = dataByte;
@@ skipping 1168 matching lines @@
 
     insert("FontBBox", makeFontBBox(bbox, 1000))->unref();
     insertInt("FirstChar", firstGlyphID());
     insertInt("LastChar", lastGlyphID());
     insert("Widths", widthArray.get());
     insertName("CIDToGIDMap", "Identity");
 
     populateToUnicodeTable(NULL);
     return true;
 }