Avoid late extra error message if globalhoykeys fail (fixes: #3034)

(cherry picked from commit 18616970)

bin/vlc.c

@@ -152,6 +152,7 @@ int main( int i_argc, const char *ppsz_argv[] )
             pthread_sigmask (SIG_UNBLOCK, &set, NULL);
         }
         libvlc_add_intf (vlc, "globalhotkeys,none", &ex);
+        libvlc_exception_clear (&ex);
         libvlc_add_intf (vlc, NULL, &ex);
         libvlc_playlist_play (vlc, -1, 0, NULL, &dummy);
         libvlc_wait (vlc);