Fix svn copies for apply_issue

_check_output_svn sets the cwd to project_path
therefore files should not have project_path.

R=maruel@chromium.org,cmp@chromium.org
BUG=149702


Review URL: https://chromiumcodereview.appspot.com/10909254

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@156953 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/checkout.py b/checkout.py
index 33c0c31..c8f240a 100644
--- a/checkout.py
+++ b/checkout.py
@@ -341,11 +341,7 @@
                 raise PatchApplicationFailed(
                     p, 'File exist but was about to be overwriten')
               self._check_output_svn(
-                  [
-                    'copy',
-                    os.path.join(self.project_path, p.source_filename),
-                    filepath
-                  ])
+                  ['copy', p.source_filename, p.filename])
             if p.diff_hunks:
               cmd = ['patch', '-p%s' % p.patchlevel, '--forward', '--force']
               stdout += subprocess2.check_output(