patch 8.1.0289: cursor moves to wrong column after quickfix jump

Problem:    Cursor moves to wrong column after quickfix jump.
Solution:   Set the curswant flag. (Andy Massimino, closes #3331)
diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index ce19e74..8a175a1 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -3546,3 +3546,12 @@
   call Xview_result_split_tests('c')
   call Xview_result_split_tests('l')
 endfunc
+
+" Test that :cc sets curswant
+func Test_curswant()
+  helpgrep quickfix
+  normal! llll
+  1cc
+  call assert_equal(getcurpos()[4], virtcol('.'))
+  cclose | helpclose
+endfunc