patch 9.0.0708: :confirm does not work properly for a terminal buffer

Problem:    :confirm does not work properly for a terminal buffer.
Solution:   Handle :confirm for a terminal buffer differently.  (Yee Cheng
            Chin, closes #11312)
diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 3db1592..c13d354 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -86,6 +86,13 @@
 #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
 	if ((p_confirm || (cmdmod.cmod_flags & CMOD_CONFIRM)) && p_write)
 	{
+# ifdef FEAT_TERMINAL
+	    if (term_job_running(buf->b_term))
+	    {
+		return term_confirm_stop(buf) == FAIL;
+	    }
+# endif
+
 	    buf_T	*buf2;
 	    int		count = 0;
 
@@ -198,6 +205,7 @@
 			|| (cmdmod.cmod_flags & CMOD_BROWSE)
 #endif
 			)
+		    && !bt_dontwrite(buf2)
 		    && !buf2->b_p_ro)
 	    {
 		bufref_T bufref;