fixup don't show travis notifications from forks

(cherry picked from commit 55bc62f)

.travis.yml

@@ -48,7 +48,7 @@ notifications:
     irc:
         channels:
 # "chat.freenode.net#wesnoth-dev"
-              secure: "HwCgH1VmpYbfv4giKIGkATkWc6o1+HXH827JXwxDnwFGZrLyf+1t4mHC6OaTMOFkZvT7qhSfIe80GeiRkg2x14ZpUE9XYewUUOSq7dRJlk2KLWlGRf5fZFHZVEdDOPdTdJjCLGqddY+4sMjqMlrtgIOxbPSXKLPTJLBhEEr8ZqE="
+            - secure: "HwCgH1VmpYbfv4giKIGkATkWc6o1+HXH827JXwxDnwFGZrLyf+1t4mHC6OaTMOFkZvT7qhSfIe80GeiRkg2x14ZpUE9XYewUUOSq7dRJlk2KLWlGRf5fZFHZVEdDOPdTdJjCLGqddY+4sMjqMlrtgIOxbPSXKLPTJLBhEEr8ZqE="
         template:
             - "\x02%{repository}\x0f#\x0312%{build_number}\x0f (\x0307%{branch}\x0f - \x02%{commit}\x0f : \x0303%{author}\x0f): \x02%{message}\x0f"
             - "Build details : \x0302%{build_url}\x0f"