Fix some problems reported by clang static analyzer

Source/core/rendering/InlineTextBox.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 193 matching lines @@
 
     RenderText* textObj = textRenderer();
     LayoutUnit selTop = selectionTop();
     LayoutUnit selHeight = selectionHeight();
     RenderStyle* styleToUse = textObj->style(isFirstLineStyle());
     const Font& font = styleToUse->font();
 
     StringBuilder charactersWithHyphen;
     bool respectHyphen = ePos == m_len && hasHyphen();
     TextRun textRun = constructTextRun(styleToUse, font, respectHyphen ? &charactersWithHyphen : 0);
-    if (respectHyphen)
-        endPos = textRun.length();
 
     FloatPoint startingPoint = FloatPoint(logicalLeft(), selTop);
     LayoutRect r;
     if (sPos || ePos != static_cast<int>(m_len))
         r = enclosingIntRect(font.selectionRectForText(textRun, startingPoint, selHeight, sPos, ePos));
     else // Avoid computing the font width when the entire line box is selected as an optimization.
         r = enclosingIntRect(FloatRect(startingPoint, FloatSize(m_logicalWidth, selHeight)));
 
     LayoutUnit logicalWidth = r.width();
     if (r.x() > logicalRight())
@@ skipping 1331 matching lines @@
     printedCharacters = fprintf(stderr, "\t%s %p", obj->renderName(), obj);
     const int rendererCharacterOffset = 24;
     for (; printedCharacters < rendererCharacterOffset; printedCharacters++)
         fputc(' ', stderr);
     fprintf(stderr, "(%d,%d) \"%s\"\n", start(), start() + len(), value.utf8().data());
 }
 
 #endif
 
 } // namespace WebCore