Cleanup: remove argument descriptor parameter when calling inline cache miss handler.

runtime/vm/stub_code_x64.cc

Index: runtime/vm/stub_code_x64.cc
===================================================================
--- runtime/vm/stub_code_x64.cc	(revision 25155)
+++ runtime/vm/stub_code_x64.cc	(working copy)
@@ -1500,7 +1500,6 @@
     __ pushq(RCX);
   }
   __ pushq(RBX);  // Pass IC data object.
-  __ pushq(R10);  // Pass arguments descriptor array.
   if (num_args == 1) {
     __ CallRuntime(kInlineCacheMissHandlerOneArgRuntimeEntry);
   } else if (num_args == 2) {
@@ -1510,9 +1509,8 @@
   } else {
     UNIMPLEMENTED();
   }
-  // Remove the call arguments pushed earlier, including the IC data object
-  // and the arguments descriptor array.
-  for (intptr_t i = 0; i < num_args + 2; i++) {
+  // Remove the call arguments pushed earlier, including the IC data object.
+  for (intptr_t i = 0; i < num_args + 1; i++) {
     __ popq(RAX);
   }
   __ popq(RAX);  // Pop returned code object into RAX (null if not found).