Fix None target type with Ninja build.

pylib/gyp/generator/ninja.py

 # Copyright (c) 2013 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import collections
 import copy
 import hashlib
 import json
 import multiprocessing
 import os.path
@@ skipping 2107 matching lines @@
         ninja_file.write(ninja_output.getvalue())
       ninja_output.close()
       master_ninja.subninja(output_file)
 
     if target:
       if name != target.FinalOutput() and spec['toolset'] == 'target':
         target_short_names.setdefault(name, []).append(target)
       target_outputs[qualified_target] = target
       if qualified_target in all_targets:
         all_outputs.add(target.FinalOutput())
+    else:
+      target_short_names.setdefault(name, [])
 
   if target_short_names:
     # Write a short name to build this target.  This benefits both the
     # "build chrome" case as well as the gyp tests, which expect to be
     # able to run actions and build libraries by their short name.
     master_ninja.newline()
     master_ninja.comment('Short names for targets.')
     for short_name in target_short_names:
       master_ninja.build(short_name, 'phony', [x.FinalOutput() for x in
                                                target_short_names[short_name]])
@@ skipping 48 matching lines @@
           arglists.append(
               (target_list, target_dicts, data, params, config_name))
         pool.map(CallGenerateOutputForConfig, arglists)
       except KeyboardInterrupt, e:
         pool.terminate()
         raise e
     else:
       for config_name in config_names:
         GenerateOutputForConfig(target_list, target_dicts, data, params,
                                 config_name)