patch 8.1.1421: drawing "~" line in popup window
Problem: Drawing "~" line in popup window.
Solution: Just draw text in the last line of the popup window.
diff --git a/src/testdir/dumps/Test_popupwin_05.dump b/src/testdir/dumps/Test_popupwin_05.dump
index bfb50f0..2c74d74 100644
--- a/src/testdir/dumps/Test_popupwin_05.dump
+++ b/src/testdir/dumps/Test_popupwin_05.dump
@@ -3,7 +3,7 @@
|~| @73
|~| @6|o+0#0000001#ffd7ff255|t|h|e|r| |t|a|b| @5| +0#4040ff13#ffffff0@51
|~| @6|a+0#0000001#ffd7ff255| |c+0#ff404010&|o|m@1|e|n|t| +0#0000001&|l|i|n|e| | +0#4040ff13#ffffff0@51
-|~| @6|~+0&#ffd7ff255| @13| +0&#ffffff0@51
+|~| @6| +0&#ffd7ff255@14| +0&#ffffff0@51
|~| @73
|~| @73
|~| @73