Unbreak --deopt-every-n-times.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index 2c62afc9e37e2c9c73a71d92267967a06bf6614b..dc419e9e2206d25bafa06a9ff60463f52cb3dd88 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -828,7 +828,9 @@ void LCodeGen::DeoptimizeIf(Condition cc,
   }
 
   ASSERT(FLAG_deopt_every_n_times < 2);  // Other values not supported on MIPS.
-  if (FLAG_deopt_every_n_times == 1 && info_->opt_count() == id) {
+  if (FLAG_deopt_every_n_times == 1 &&
+      !info()->IsStub() &&
+      info()->opt_count() == id) {
     __ Jump(entry, RelocInfo::RUNTIME_ENTRY);
     return;
   }