Renamed 'exceptionNameDescription' to per-file variable name to avoid
name conflict.

* Modules/indexeddb/IDBDatabaseException.cpp:
(WebCore::IDBDatabaseException::initializeDescription):
* Modules/webdatabase/SQLException.cpp:
(WebCore::SQLException::initializeDescription):
* dom/EventException.cpp:
(WebCore::EventException::initializeDescription):
* dom/RangeException.cpp:
(WebCore::RangeException::initializeDescription):
* fileapi/FileException.cpp:
(WebCore::FileException::initializeDescription):
* fileapi/OperationNotAllowedException.cpp:
(WebCore::OperationNotAllowedException::initializeDescription):
* svg/SVGException.cpp:
(WebCore::SVGException::initializeDescription):
* xml/XPathException.cpp:
(WebCore::XPathException::initializeDescription):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@113695 268f45cc-cd09-0410-ab3c-d52691b4dbfc