Avoid allocating temporary ranges in connection with text and character iterators.

Source/core/editing/SpellChecker.cpp

Index: Source/core/editing/SpellChecker.cpp
diff --git a/Source/core/editing/SpellChecker.cpp b/Source/core/editing/SpellChecker.cpp
index 5f9be844eeb8a8b7a85111a8503ef9e49903203f..c6caf4abeb44a6cccd9eb524fa96df4ad2dc5278 100644
--- a/Source/core/editing/SpellChecker.cpp
+++ b/Source/core/editing/SpellChecker.cpp
@@ -251,7 +251,7 @@ void SpellChecker::advanceToNextMisspelling(bool startBeforeSelection)
             // Stop looking at start of next misspelled word
             CharacterIterator chars(grammarSearchRange.get());
             chars.advance(misspellingOffset);
-            grammarSearchRange->setEnd(chars.range()->startContainer(), chars.range()->startOffset(), IGNORE_EXCEPTION);
+            grammarSearchRange->setEnd(chars.startContainer(), chars.startOffset(), IGNORE_EXCEPTION);
         }
 
         if (isGrammarCheckingEnabled())
@@ -282,7 +282,7 @@ void SpellChecker::advanceToNextMisspelling(bool startBeforeSelection)
                 // Stop looking at start of next misspelled word
                 CharacterIterator chars(grammarSearchRange.get());
                 chars.advance(misspellingOffset);
-                grammarSearchRange->setEnd(chars.range()->startContainer(), chars.range()->startOffset(), IGNORE_EXCEPTION);
+                grammarSearchRange->setEnd(chars.startContainer(), chars.startOffset(), IGNORE_EXCEPTION);
             }
 
             if (isGrammarCheckingEnabled())