Another attempt to make Visual C++ happy.

BUG=
R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/429903004

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22717 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/compiler/instruction.h

@@ -489,8 +489,7 @@ class Instruction : public ZoneObject {
   // zone-allocated memory.
   void* operator new(size_t, void* location) { return location; }
 
-  void operator delete(void*, size_t) { UNREACHABLE(); }
-  void operator delete(void* pointer, Zone* zone) { UNREACHABLE(); }
+  void operator delete(void* pointer, void* location) { UNREACHABLE(); }
 
  protected:
   explicit Instruction(InstructionCode opcode)