patch 8.2.0500: using the same loop in many places

Problem:    Using the same loop in many places.
Solution:   Define more FOR_ALL macros. (Yegappan Lakshmanan, closes #5339)
diff --git a/src/evalbuffer.c b/src/evalbuffer.c
index de6af6a..2c20939 100644
--- a/src/evalbuffer.c
+++ b/src/evalbuffer.c
@@ -117,7 +117,7 @@
 {
     wininfo_T *wip;
 
-    for (wip = curbuf->b_wininfo; wip != NULL; wip = wip->wi_next)
+    FOR_ALL_BUF_WININFO(curbuf, wip)
     {
 	if (wip->wi_win != NULL)
 	{
@@ -572,11 +572,11 @@
     windows = list_alloc();
     if (windows != NULL)
     {
-	for (wp = first_popupwin; wp != NULL; wp = wp->w_next)
+	FOR_ALL_POPUPWINS(wp)
 	    if (wp->w_buffer == buf)
 		list_append_number(windows, (varnumber_T)wp->w_id);
 	FOR_ALL_TABPAGES(tp)
-	    for (wp = tp->tp_first_popupwin; wp != NULL; wp = wp->w_next)
+	    FOR_ALL_POPUPWINS_IN_TAB(tp, wp)
 		if (wp->w_buffer == buf)
 		    list_append_number(windows, (varnumber_T)wp->w_id);