Fix the range returned by findFirstMisspelling

Source/core/editing/TextCheckingHelper.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 251 matching lines @@
 
                 // Compute range of misspelled word
                 Position misspellingStart = m_start;
                 Position misspellingEnd = m_end;
                 TextIterator::subrange(misspellingStart, misspellingEnd, currentChunkOffset + misspellingLocation, misspellingLength);
 
                 // Remember first-encountered misspelling and its offset.
                 if (!firstMisspelling) {
                     firstMisspellingOffset = currentChunkOffset + misspellingLocation;
                     firstMisspelling = it.substring(misspellingLocation, misspellingLength);
-                    firstMisspellingRange = Range::create(misspellingStart.containerNode()->document(), m_start, m_end);
+                    firstMisspellingRange = Range::create(misspellingStart.containerNode()->document(), misspellingStart, misspellingEnd);

[yosin_UTC9, 2015/05/21 02:28:49]

It seems current code is correct, since |misspellingStart == m_start| and
|misspellingEnd == m_end|.

                 }
 
                 // Store marker for misspelled word.
                 misspellingStart.containerNode()->document().markers().addMarker(misspellingStart, misspellingEnd, DocumentMarker::Spelling);
 
                 // Bail out if we're marking only the first misspelling, and not all instances.
                 if (!markAll)
                     break;
             }
         }
@@ skipping 282 matching lines @@
         return false;
 
     const Settings* settings = frame->settings();
     if (!settings)
         return false;
 
     return settings->unifiedTextCheckerEnabled();
 }
 
 }