[runtime] TailCallRuntime and CallRuntime should use default argument counts

src/crankshaft/x87/lithium-codegen-x87.h

Index: src/crankshaft/x87/lithium-codegen-x87.h
diff --git a/src/crankshaft/x87/lithium-codegen-x87.h b/src/crankshaft/x87/lithium-codegen-x87.h
index 8d261f11772fc0e4f0c1af608908d04bf23c980f..634634488366f842daa19c9a6ac09b4b7c40863a 100644
--- a/src/crankshaft/x87/lithium-codegen-x87.h
+++ b/src/crankshaft/x87/lithium-codegen-x87.h
@@ -205,6 +205,11 @@ class LCodeGen: public LCodeGenBase {
     CallRuntime(function, argc, instr);
   }
 
+  void CallRuntime(Runtime::FunctionId id, LInstruction* instr) {
+    const Runtime::Function* function = Runtime::FunctionForId(id);
+    CallRuntime(function, function->nargs, instr);
+  }
+
   void CallRuntimeFromDeferred(Runtime::FunctionId id,
                                int argc,
                                LInstruction* instr,