Unreviewed. Speculative build fix on Qt Arm and Mips after r149349.

* dfg/DFGSpeculativeJIT.cpp:
(JSC::DFG::SpeculativeJIT::compileSoftModulo):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149354 268f45cc-cd09-0410-ab3c-d52691b4dbfc