Fix deopt condition in ForIn on x64

TEST=no more deopts in string-fasta

Review URL: https://chromiumcodereview.appspot.com/9836032

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@11121 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/x64/lithium-codegen-x64.cc

@@ -4727,7 +4727,7 @@ void LCodeGen::DoForInCacheArray(LForInCacheArray* instr) {
   __ movq(result,
           FieldOperand(result, FixedArray::SizeFor(instr->idx())));
   Condition cc = masm()->CheckSmi(result);
-  DeoptimizeIf(NegateCondition(cc), instr->environment());
+  DeoptimizeIf(cc, instr->environment());
 }