[runtime] TailCallRuntime and CallRuntime should use default argument counts

src/crankshaft/mips64/lithium-codegen-mips64.h

Index: src/crankshaft/mips64/lithium-codegen-mips64.h
diff --git a/src/crankshaft/mips64/lithium-codegen-mips64.h b/src/crankshaft/mips64/lithium-codegen-mips64.h
index 940b26f2bb3e6dd679fb50309fea536cb1c68122..efadb0f26bcebf485d4a39f9257bb3a6415e7f04 100644
--- a/src/crankshaft/mips64/lithium-codegen-mips64.h
+++ b/src/crankshaft/mips64/lithium-codegen-mips64.h
@@ -199,6 +199,11 @@ class LCodeGen: public LCodeGenBase {
     CallRuntime(function, num_arguments, instr);
   }
 
+  void CallRuntime(Runtime::FunctionId id, LInstruction* instr) {
+    const Runtime::Function* function = Runtime::FunctionForId(id);
+    CallRuntime(function, function->nargs, instr);
+  }
+
   void LoadContextFromDeferred(LOperand* context);
   void CallRuntimeFromDeferred(Runtime::FunctionId id,
                                int argc,