fix dryrun, path check in 'fetch'

TBR=iannucci@chromium.org, agable@chromium.org, maruel@chromium.org

Review URL: https://codereview.chromium.org/13588004

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@192160 0039d316-1c4b-4281-b951-d872f2087c98

fetch.py

@@ -160,6 +160,7 @@ def handle_args(argv):
   if argv[1] in ('-h', '--help', 'help'):
     usage()
 
+  dryrun = False
   if argv[1] in ('-n', '--dry-run'):
     dryrun = True
     argv.pop(1)
@@ -180,7 +181,7 @@ def run_recipe_fetch(recipe, props, aliased=False):
   """Invoke a recipe's fetch method with the passed-through args
   and return its json output as a python object."""
   recipe_path = os.path.abspath(os.path.join(SCRIPT_PATH, 'recipes', recipe))
-  if not os.path.exists(recipe_path):
+  if not os.path.exists(recipe_path + '.py'):
     print "Could not find a recipe for %s" % recipe
     sys.exit(1)