Remove left-over compiler-code from precompiled runtime.

runtime/vm/dart.cc

Index: runtime/vm/dart.cc
diff --git a/runtime/vm/dart.cc b/runtime/vm/dart.cc
index 895d6b192b5e6fa137818d574c2d3db8b8532fe7..d870b04031a1ec4f65ba0bbbcdf5bfbe1d90788e 100644
--- a/runtime/vm/dart.cc
+++ b/runtime/vm/dart.cc
@@ -454,11 +454,14 @@ RawError* Dart::InitializeIsolate(const uint8_t* snapshot_buffer, void* data) {
     StubCode::Init(I);
   }
 
+#if !defined(DART_PRECOMPILED_RUNTIME)
   // When running precompiled, the megamorphic miss function/code comes from the
   // snapshot.
   if (!Dart::IsRunningPrecompiledCode()) {
     MegamorphicCacheTable::InitMissHandler(I);
   }
+#endif
+
   const Code& miss_code =
       Code::Handle(I->object_store()->megamorphic_miss_code());
   I->set_ic_miss_code(miss_code);