patch 8.2.5041: cannot close a terminal popup with "NONE" job

Problem:    Cannot close a terminal popup with "NONE" job.
Solution:   Adjust the conditions for whether a job is running.
            (closes #10498)
diff --git a/src/buffer.c b/src/buffer.c
index 88528e9..efec431 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -3282,7 +3282,7 @@
     {
 #ifdef FEAT_TERMINAL
 	job_running = term_job_running(buf->b_term);
-	job_none_open = job_running && term_none_open(buf->b_term);
+	job_none_open = term_none_open(buf->b_term);
 #endif
 	// skip unlisted buffers, unless ! was used
 	if ((!buf->b_p_bl && !eap->forceit && !vim_strchr(eap->arg, 'u'))
@@ -3318,9 +3318,9 @@
 	changed_char = (buf->b_flags & BF_READERR) ? 'x'
 					     : (bufIsChanged(buf) ? '+' : ' ');
 #ifdef FEAT_TERMINAL
-	if (term_job_running(buf->b_term))
+	if (job_running)
 	{
-	    if (term_none_open(buf->b_term))
+	    if (job_none_open)
 		ro_char = '?';
 	    else
 		ro_char = 'R';