patch 7.4.2101
Problem:    Looping over windows, buffers and tab pages is inconsistant.
Solution:   Use FOR_ALL_ macros everywhere. (Yegappan Lakshmanan)
diff --git a/src/term.c b/src/term.c
index 506cf3c..6af82db 100644
--- a/src/term.c
+++ b/src/term.c
@@ -1907,7 +1907,7 @@
 	     * loaded.
 	     */
 	    set_bufref(&old_curbuf, curbuf);
-	    for (curbuf = firstbuf; curbuf != NULL; curbuf = curbuf->b_next)
+	    FOR_ALL_BUFFERS(curbuf)
 	    {
 		if (curbuf->b_ml.ml_mfp != NULL)
 		    apply_autocmds(EVENT_TERMCHANGED, NULL, NULL, FALSE,