fix some memory leaks

src/save.c

@@ -1177,6 +1177,8 @@ free_dungeons(void)
     return;
 }
 
+extern int options_set_window_colors_flag; /* options.c */
+
 /* free a lot of allocated memory which is ordinarily freed during save */
 void
 freedynamicdata(void)
@@ -1272,6 +1274,9 @@ freedynamicdata(void)
     if (VIA_WINDOWPORT())
         status_finish();
 
+    if (options_set_window_colors_flag)
+        options_free_window_colors();
+
     /* last, because it frees data that might be used by panic() to provide
        feedback to the user; conceivably other freeing might trigger panic */
     sysopt_release(); /* SYSCF strings */