Fix broken ARM debug build.

TBR=
Review URL: http://codereview.chromium.org/7284035

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8498 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/lithium-arm.cc

@@ -1488,7 +1488,7 @@ LInstruction* LChunkBuilder::DoHasCachedArrayIndexAndBranch(
 
 LInstruction* LChunkBuilder::DoClassOfTestAndBranch(
     HClassOfTestAndBranch* instr) {
-  ASSERT(compare->value()->representation().IsTagged());
+  ASSERT(instr->value()->representation().IsTagged());
   return new LClassOfTestAndBranch(UseTempRegister(instr->value()),
                                    TempRegister());
 }