Fixed a small bug in the clip render rect function where it doesn't

check to make sure the src rect pointer isn't NULL.

src/GameEngine.c

@@ -225,13 +225,23 @@ void fill_rectangle(RenderRect rect, SDL_Color color) {
 }
 
 void clip_render_rects_to_drawing_area(RenderRect *src, RenderRect *dest) {
+  if (!dest) {
+    return;
+  }
+
   WindowDrawingArea area = get_window_drawing_area();
 
   // If the rectangle is completely out of bounds, set its width and height to 0
   if (dest->x > area.x + area.width || dest->x + dest->width < area.x ||
       dest->y > area.y + area.height || dest->y + dest->height < area.y) {
-    src->width = 0.0f;
+    if (src) {
-    src->height = 0.0f;
+      src->width = 0.0f;
+      src->height = 0.0f;
+    }
+
+    dest->width = 0.0f;
+    dest->height = 0.0f;
+
     return;
   }