core: fix infinite loop when the terminal is closed on the secure password prompt (closes #1010)

ChangeLog.adoc

@@ -32,6 +32,7 @@ Improvements::
 
 Bug fixes::
 
+  * core: fix infinite loop when the terminal is closed on the secure password prompt (issue #1010)
   * buflist: fix long mouse gestures
   * buflist: fix slow switch of buffer when there are a lot of buffers opened (issue #998)
   * buflist: add option "bar" in command /buflist, do not automatically add the "buflist" bar when the option buflist.look.enabled is off (issue #994)

src/gui/curses/gui-curses-main.c

@@ -104,8 +104,8 @@ gui_main_get_password (const char **prompt, char *password, int size)
         /* enter */
         if (ch == '\n')
             break;
-        /* ctrl-C */
-        if (ch == 3)
+        /* terminal lost or ctrl-C */
+        if ((ch == ERR) || (ch == 3))
         {
             password[0] = 3;
             i = 1;