VM: Fix potential bug in x64 inline cache stub.

runtime/vm/stub_code_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
@@ skipping 1472 matching lines @@
       __ pushq(R9);
     }
     __ pushq(R8);
     __ call(RCX);
 
     Label done;
     __ movq(RDX, RAX);
     __ movq(RBX, Address(RBP, kFirstLocalSlotFromFp * kWordSize));
     __ UpdateRangeFeedback(RDX, 2, RBX, RCX, &done);
     __ Bind(&done);
-    __ LeaveFrame();
+    __ LeaveStubFrame();
     __ ret();
   } else {
     __ jmp(RCX);
   }
 
   __ Bind(&stepping);
   __ EnterStubFrame();
   __ pushq(RBX);
   __ CallRuntime(kSingleStepHandlerRuntimeEntry, 0);
   __ popq(RBX);
@@ skipping 595 matching lines @@
 
   __ movq(left, Address(RSP, 2 * kWordSize));
   __ movq(right, Address(RSP, 1 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right);
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64