patch 8.1.1902: cannot have an info popup without a border
Problem: Cannot have an info popup without a border.
Solution: Add the "border" item to 'completepopup'.
diff --git a/src/proto/popupwin.pro b/src/proto/popupwin.pro
index f320443..9f6d433 100644
--- a/src/proto/popupwin.pro
+++ b/src/proto/popupwin.pro
@@ -6,6 +6,7 @@
void popup_set_firstline(win_T *wp);
int popup_is_in_scrollbar(win_T *wp, int row, int col);
void popup_handle_scrollbar_click(win_T *wp, int row, int col);
+int popup_top_extra(win_T *wp);
int popup_height(win_T *wp);
int popup_width(win_T *wp);
int popup_extra_width(win_T *wp);