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/evalwindow.c b/src/evalwindow.c
index 534a047..ab4ba83 100644
--- a/src/evalwindow.c
+++ b/src/evalwindow.c
@@ -106,14 +106,14 @@
 #ifdef FEAT_PROP_POPUP
     // popup windows are in separate lists
      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_id == id)
 	     {
 		 if (tpp != NULL)
 		     *tpp = tp;
 		 return wp;
 	     }
-    for (wp = first_popupwin; wp != NULL; wp = wp->w_next)
+    FOR_ALL_POPUPWINS(wp)
 	if (wp->w_id == id)
 	{
 	    if (tpp != NULL)
@@ -188,7 +188,7 @@
 	    if (wp->w_id == nr)
 		return wp;
 	// check global popup windows
-	for (wp = first_popupwin; wp != NULL; wp = wp->w_next)
+	FOR_ALL_POPUPWINS(wp)
 	    if (wp->w_id == nr)
 		return wp;
 #endif