applied Jukkas patch

client.c

@@ -131,7 +131,7 @@ detach(Client *c) {
 
 void
 focus(Client *c) {
-	if( !c && selscreen || c && !isvisible(c))
+	if((!c && selscreen)|| (c && !isvisible(c)))
 		for(c = stack; c && !isvisible(c); c = c->snext);
 	if(sel && sel != c) {
 		grabbuttons(sel, False);

event.c

@@ -244,7 +244,7 @@ enternotify(XEvent *e) {
 
 	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 		return;
-	if(c = getclient(ev->window))
+	if((c = getclient(ev->window)))
 		focus(c);
 	else if(ev->window == root) {
 		selscreen = True;