Another attempt to make Visual C++ happy.

src/compiler/instruction.h

Index: src/compiler/instruction.h
diff --git a/src/compiler/instruction.h b/src/compiler/instruction.h
index 92b785bb3f4d2bff51fcd0a34af5577e0555c9c7..7ec36e497d437c827d5b2ac78b64c2d816bc90c0 100644
--- a/src/compiler/instruction.h
+++ b/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)