MIPS: Fixed ASSERT in commit r13807.

BUG=

Review URL: https://codereview.chromium.org/12506006

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13872 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/code-stubs-mips.cc

@@ -7222,7 +7222,7 @@ void ICCompareStub::GenerateNumbers(MacroAssembler* masm) {
 
 
 void ICCompareStub::GenerateInternalizedStrings(MacroAssembler* masm) {
-  ASSERT(state_ == CompareIC::SYMBOL);
+  ASSERT(state_ == CompareIC::INTERNALIZED_STRING);
   Label miss;
 
   // Registers containing left and right operands respectively.