fix: restore modified state (set_modify() ) was done before swicthing back xctx to current schematic

src/xinit.c

@@ -821,11 +821,10 @@ void preview_window(const char *what, const char *tk_win_path, const char *filen
     free_xschem_data();
 
     show_pin_net_names = save_show_pin;
+    xctx = save_xctx; /* restore schematic */
     modified = save_mod;
     set_modify(modified);
 
-    xctx = save_xctx; /* restore schematic */
-
     window = save_window;
     resetwin();
     change_linewidth(-1.);