svn always add a \n at the end of the output.

It's better to strip it off.

TEST=none
BUG=none
TBR=nsylvain

Review URL: http://codereview.chromium.org/122009

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@18123 0039d316-1c4b-4281-b951-d872f2087c98

presubmit_support.py

@@ -469,7 +469,7 @@ class SvnAffectedFile(AffectedFile):
   def Property(self, property_name):
     if not property_name in self._properties:
       self._properties[property_name] = gcl.GetSVNFileProperty(
-          self.AbsoluteLocalPath(), property_name)
+          self.AbsoluteLocalPath(), property_name).rstrip()
     return self._properties[property_name]
 
   def IsTextFile(self):