X-Git-Url: https://git.distorted.org.uk/u/mdw/putty/blobdiff_plain/88b3172a9144857696ed9425a0e66e5a11bdd927..0980c4f28e5909a05be74af88732fddd7086f2f6:/mac/macterm.c

diff --git a/mac/macterm.c b/mac/macterm.c
index 22360e14..d5a6014d 100644
--- a/mac/macterm.c
+++ b/mac/macterm.c
@@ -1015,7 +1015,7 @@ void mac_closeterm(WindowPtr window)
     int alertret;
     Session *s = mac_windowsession(window);
 
-    if (s->cfg.warn_on_close) {
+    if (s->cfg.warn_on_close && !s->session_closed) {
 	ParamText("\pAre you sure you want to close this session?",
 		  NULL, NULL, NULL);
 	alertret=CautionAlert(wQuestion, NULL);
@@ -1028,8 +1028,10 @@ void mac_closeterm(WindowPtr window)
     HideWindow(s->window);
     *s->prev = s->next;
     s->next->prev = s->prev;
-    ldisc_free(s->ldisc);
-    s->back->free(s->backhandle);
+    if (s->ldisc)
+	ldisc_free(s->ldisc);
+    if (s->back)
+	s->back->free(s->backhandle);
     log_free(s->logctx);
     if (s->uni_to_font != NULL)
 	DisposeUnicodeToTextInfo(&s->uni_to_font);