patch 7.4.2024
Problem:    More buf_valid() calls can be optimized.
Solution:   Use bufref_valid() instead.
diff --git a/src/netbeans.c b/src/netbeans.c
index e326af8..736bb16 100644
--- a/src/netbeans.c
+++ b/src/netbeans.c
@@ -2177,10 +2177,15 @@
 #endif
 			)
 		{
+#ifdef FEAT_AUTOCMD
+		    bufref_T bufref;
+
+		    set_bufref(&bufref, buf->bufp);
+#endif
 		    buf_write_all(buf->bufp, FALSE);
 #ifdef FEAT_AUTOCMD
 		    /* an autocommand may have deleted the buffer */
-		    if (!buf_valid(buf->bufp))
+		    if (!bufref_valid(&bufref))
 			buf->bufp = NULL;
 #endif
 		}