Fix the print_error parsing, which caused spurious errors on gcl usage.

Review URL: http://codereview.chromium.org/113656

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@16513 0039d316-1c4b-4281-b951-d872f2087c98

gclient.py

@@ -509,7 +509,7 @@ def CaptureSVN(args, in_directory=None, print_error=True):
   # when it's called with a list because it only tries to execute the
   # first string ("svn").
   stderr = None
-  if print_error:
+  if not print_error:
     stderr = subprocess.PIPE
   return subprocess.Popen(c,
                           cwd=in_directory,