[sh4] Jump over maxJumpReplacementSize in revertJumpToMove.

https://bugs.webkit.org/show_bug.cgi?id=120007

Patch by Julien Brianceau <jbriance@cisco.com> on 2013-10-07
Reviewed by Oliver Hunt.

Jump over maxJumpReplacementSize in revertJumpToMove, even if there is no constant
value within the area. This patch fixes debug ASSERTs failures for sh4 architecture.

* assembler/SH4Assembler.h:
(JSC::SH4Assembler::revertJumpToMove):

Change-Id: Ice297393b167eace620ace8d8957014f0b3945c8
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@157046 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>