Fix regression on prefix/suffix for libraries

pylib/gyp/generator/ninja.py

 # Copyright (c) 2012 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 gyp
 import gyp.common
 import gyp.system_test
 import gyp.xcode_emulation
 import os.path
 import re
@@ skipping 816 matching lines @@
 
   def ComputeOutputFileName(self, spec, type=None):
     """Compute the filename of the final output for the current target."""
     if not type:
       type = spec['type']
 
     # Compute filename prefix: the product prefix, or a default for
     # the product type.
     if self.flavor == 'win':
       DEFAULT_PREFIX = {
+        'loadable_module': '',
+        'shared_library': '',
+        'static_library': '',
+        }
+    else:
+      DEFAULT_PREFIX = {
         'loadable_module': 'lib',
         'shared_library': 'lib',
         'static_library': 'lib',
         }
-    else:
-      DEFAULT_PREFIX = {
-        'loadable_module': '',
-        'shared_library': '',
-        'static_library': '',
-        }
     prefix = spec.get('product_prefix', DEFAULT_PREFIX.get(type, ''))
 
     # Compute filename extension: the product extension, or a default
     # for the product type.
     if self.flavor == 'win':
       DEFAULT_EXTENSION = {
         'static_library': 'lib',
         'loadable_module': 'dll',
         'shared_library': 'dll',
         'executable': 'exe',
@@ skipping 398 matching lines @@
 
   user_config = params.get('generator_flags', {}).get('config', None)
   if user_config:
     GenerateOutputForConfig(target_list, target_dicts, data, params,
                             user_config)
   else:
     config_names = target_dicts[target_list[0]]['configurations'].keys()
     for config_name in config_names:
       GenerateOutputForConfig(target_list, target_dicts, data, params,
                               config_name)