eloop: fix signal creation

The previous fix incorrectly registered new signals always to the last
found signal which is definitely incorrect. Therefore, we now correctly
traverse the list and register new signals as new signals.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>

src/eloop.c

@@ -1690,6 +1690,7 @@ int ev_eloop_register_signal_cb(struct ev_eloop *loop, int signum,
 		sig = kmscon_dlist_entry(iter, struct ev_signal_shared, list);
 		if (sig->signum == signum)
 			break;
+		sig = NULL;
 	}
 
 	if (!sig) {