patch 8.2.2149: popupwin test for latin1 sometimes fails

Problem:    Popupwin test for latin1 sometimes fails.
Solution:   Wait for the script to finish.
diff --git a/src/testdir/test_popupwin.vim b/src/testdir/test_popupwin.vim
index cf9536f..32a1eb7 100644
--- a/src/testdir/test_popupwin.vim
+++ b/src/testdir/test_popupwin.vim
@@ -3721,11 +3721,14 @@
       set encoding=latin1
       terminal cat Xmultibyte
       call popup_create(['one', 'two', 'three', 'four'], #{line: 1, col: 10})
+      redraw
+      echo "Done"
   END
   call writefile(lines, 'XtestPopupLatin')
   call writefile([repeat("\u3042 ", 120)], 'Xmultibyte')
 
   let buf = RunVimInTerminal('-S XtestPopupLatin', #{rows: 10})
+  call WaitForAssert({-> assert_match('Done', term_getline(buf, 10))})
 
   call term_sendkeys(buf, ":q\<CR>")
   call StopVimInTerminal(buf)
diff --git a/src/version.c b/src/version.c
index a5c7127..95633c8 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2149,
+/**/
     2148,
 /**/
     2147,