Address code review comment from previous commit.

runtime/vm/dart_api_impl.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 "include/dart_api.h"
 #include "include/dart_mirrors_api.h"
 #include "include/dart_native_api.h"
 
 #include "lib/stacktrace.h"
 #include "platform/assert.h"
@@ skipping 4960 matching lines @@
 #if !defined(DART_PRECOMPILED_RUNTIME)
 static Dart_Handle LoadKernelProgram(Thread* T,
                                      const String& url,
                                      void* kernel) {
   // NOTE: Now the VM owns the [kernel_program] memory!
   // We will promptly delete it when done.
   kernel::Program* program = reinterpret_cast<kernel::Program*>(kernel);
   kernel::KernelReader reader(program);
   const Object& tmp = reader.ReadProgram();
   delete program;
-
-  if (tmp.IsError()) {
-    return Api::NewHandle(T, tmp.raw());
-  }
-  return Dart_Null();
+  return Api::NewHandle(T, tmp.raw());
 }
 #endif
 
 DART_EXPORT Dart_Handle Dart_LoadScript(Dart_Handle url,
                                         Dart_Handle resolved_url,
                                         Dart_Handle source,
                                         intptr_t line_offset,
                                         intptr_t column_offset) {
   API_TIMELINE_DURATION;
   DARTSCOPE(Thread::Current());
@@ skipping 1755 matching lines @@
 #endif
 }
 
 DART_EXPORT void Dart_DumpNativeStackTrace(void* context) {
 #ifndef PRODUCT
   Profiler::DumpStackTrace(context);
 #endif
 }
 
 }  // namespace dart