Reviewed by Oliver Hunt.

        Initialize m_bytecodeIndex to -1 in JIT, and correctly initialize
        it for each type of stub using the return address to find the correct
        offset.

        * jit/JIT.cpp:
        (JSC::JIT::JIT):
        * jit/JIT.h:
        (JSC::JIT::compileGetByIdProto):
        (JSC::JIT::compileGetByIdSelfList):
        (JSC::JIT::compileGetByIdProtoList):
        (JSC::JIT::compileGetByIdChainList):
        (JSC::JIT::compileGetByIdChain):
        (JSC::JIT::compilePutByIdTransition):
        (JSC::JIT::compileCTIMachineTrampolines):
        (JSC::JIT::compilePatchGetArrayLength):
        * jit/JITStubCall.h:
        (JSC::JITStubCall::call):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@44743 268f45cc-cd09-0410-ab3c-d52691b4dbfc