Explicitly convert issue and patchset to int.

upload.py returns them as string, eventually leading to a crash.

R=iannucci@chromium.org
BUG=265546

Review URL: https://chromiumcodereview.appspot.com/21020008

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@214247 0039d316-1c4b-4281-b951-d872f2087c98

git_cl.py

@@ -1412,6 +1412,8 @@ def RietveldUpload(options, args, cl):
     upload_args = ['upload'] + upload_args + args
     logging.info('upload.RealMain(%s)', upload_args)
     issue, patchset = upload.RealMain(upload_args)
+    issue = int(issue)
+    patchset = int(patchset)
   except KeyboardInterrupt:
     sys.exit(1)
   except: