wayland: Phase 71b — additional frame NULL guards in actions.c

Guard the remaining wwin->frame dereferences that are reachable for
Wayland windows:
- wSetFocusTo: skip ChangeStackingLevel for fullscreen if !frame
- set_window_coords: fall back to client size when frame is NULL
  (called by find_Maximus_geometry on neighbour windows)
- wFullscreenMonitorsWindow: early return if !frame
- wMakeWindowVisible: skip wRaiseFrame if !frame

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/actions.c

@@ -217,7 +217,7 @@ void wSetFocusTo(WScreen *scr, WWindow *wwin)
 		}
 
 		/* reset fullscreen if temporarily removed due to lost focus*/
-		if (wwin->flags.fullscreen)
+		if (wwin->flags.fullscreen && wwin->frame)
 			ChangeStackingLevel(wwin->frame->core, WMFullscreenLevel);
 	}
 
@@ -814,8 +814,9 @@ static void set_window_coords(WWindow *wwin, win_coords *obs)
 {
 	obs->left = wwin->frame_x;
 	obs->top = wwin->frame_y;
-	obs->width = wwin->frame->core->width;
-	obs->height = wwin->frame->core->height;
+	/* Phase 71: Wayland windows have no frame; fall back to client size */
+	obs->width  = wwin->frame ? wwin->frame->core->width  : wwin->client.width;
+	obs->height = wwin->frame ? wwin->frame->core->height : wwin->client.height;
 	obs->bottom = obs->top + obs->height;
 	obs->right = obs->left + obs->width;
 }
@@ -967,6 +968,9 @@ void wFullscreenMonitorsWindow(WWindow *wwin, unsigned long top, unsigned long b
 	int i;
 	long monitor;
 	WMRect rect1, rect2;
+	if (!wwin->frame)
+		return; /* Phase 71: Wayland — no frame for fullscreen-monitors */
+
 
 	if ((int)top < wwin->screen_ptr->head_count &&
 	    (int)bottom < wwin->screen_ptr->head_count &&
@@ -2236,7 +2240,8 @@ void wMakeWindowVisible(WWindow *wwin)
 	} else {
 		if (!WFLAGP(wwin, no_focusable))
 			wSetFocusTo(wwin->screen_ptr, wwin);
-		wRaiseFrame(wwin->frame->core);
+		if (wwin->frame)
+			wRaiseFrame(wwin->frame->core); /* Phase 71: skip for Wayland */
 	}
 }