Code problems detected by cppcheck

Source/core/css/parser/BisonCSSParser-in.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 3923 matching lines @@
         return;
 
     // Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length.
     unsigned cumulativeFlags = 0;
     FillPositionFlag value1Flag = InvalidFillPosition;
     FillPositionFlag value2Flag = InvalidFillPosition;
     value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag, ResolveValuesAsKeyword);
     if (!value1)
         return;
 
-    value = valueList->next();
+    valueList->next();
 
     // In case we are parsing more than two values, relax the check inside of parseFillPositionComponent. top 20px is
     // a valid start for <position>.
     cumulativeFlags = AmbiguousFillPosition;
     value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Flag, ResolveValuesAsKeyword);
     if (value2)
         valueList->next();
     else {
         value1.clear();
         return;
@@ skipping 6214 matching lines @@
 {
     // The tokenizer checks for the construct of an+b.
     // However, since the {ident} rule precedes the {nth} rule, some of those
     // tokens are identified as string literal. Furthermore we need to accept
     // "odd" and "even" which does not match to an+b.
     return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even")
         || equalIgnoringCase(token, "n") || equalIgnoringCase(token, "-n");
 }
 
 }