try to fix windows after r26424

BUG=

Review URL: https://codereview.chromium.org/901603002

Cr-Commit-Position: refs/heads/master@{#26427}

src/compiler/instruction.h

@@ -89,6 +89,7 @@ class InstructionOperand {
   void* operator new(size_t size, Zone* zone) {
     return zone->New(static_cast<int>(size));
   }
+  void operator delete(void* pointer, Zone* zone) { UNREACHABLE(); }
 
  protected:
   InstructionOperand(Kind kind, int index, int virtual_register)