Remove useless jump instructions for short circuit

Remove useless jump instructions for short circuit
https://bugs.webkit.org/show_bug.cgi?id=75602

Patch by Han Hojong <hojong.han@samsung.com> on 2012-02-24
Reviewed by Michael Saboff.

Jump instruction is inserted to make short circuit,
however it does nothing but moving to the next instruction.
Therefore useless jump instructions are removed,
and jump list is moved into the case not for a short circuit,
so that only necessary instructions are added to JIT code
unless it has a 16 bit pattern character and an 8 bit string.

* yarr/YarrJIT.cpp:
(JSC::Yarr::YarrGenerator::generatePatternCharacterGreedy):
(JSC::Yarr::YarrGenerator::backtrackPatternCharacterNonGreedy):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@108753 268f45cc-cd09-0410-ab3c-d52691b4dbfc