Shrink valueForBasicShape by removing repeated calls to cssValuePool()
https://bugs.webkit.org/show_bug.cgi?id=121736

Reviewed by Sam Weinig.

* css/BasicShapeFunctions.cpp:
(WebCore::valueForBasicShape): Put the pool into a local variable and use that.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156225 268f45cc-cd09-0410-ab3c-d52691b4dbfc