demo: destory about screen before restarting #706

src/demo/demo.c

@@ -515,6 +515,7 @@ int main(int argc, char** argv){
     if(fpsgraph_stop(nc)){
       goto err;
     }
+    about_destroy(nc);
   }while(restart_demos);
   if(stop_input()){
     goto err;

src/demo/demo.h

@@ -205,6 +205,9 @@ int hud_completion_notify(const demoresult* result);
 const demoresult* demoresult_lookup(int idx);
 /*----------------------------------HUD----------------------------------*/
 
+// destroy about popup
+void about_destroy(struct notcurses* nc);
+
 // returns true if the input was handled by the menu/HUD
 bool menu_or_hud_key(struct notcurses *nc, const struct ncinput *ni);
 

src/demo/hud.c

@@ -119,6 +119,12 @@ about_toggle(struct notcurses* nc){
   ncplane_destroy(n);
 }
 
+void about_destroy(struct notcurses* nc){
+  if(about){
+    about_toggle(nc);
+  }
+}
+
 static void
 hud_toggle(struct notcurses* nc){
   ncmenu_rollup(menu);