Fix a bunch of obvious memory leaks at termination

Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>

src/ui/titlebar.c

@@ -85,6 +85,12 @@ create_title_bar(void)
     inp_put_back();
 }
 
+void
+free_title_bar(void)
+{
+    delwin(win);
+}
+
 void
 title_bar_update_virtual(void)
 {