patch 8.2.1183: assert_fails() checks the last error message
Problem: assert_fails() checks the last error message.
Solution: Check the first error, it is more relevant. Fix all the tests
that rely on the old behavior.
diff --git a/src/testdir/test_winbuf_close.vim b/src/testdir/test_winbuf_close.vim
index f4878c2..643c106 100644
--- a/src/testdir/test_winbuf_close.vim
+++ b/src/testdir/test_winbuf_close.vim
@@ -115,7 +115,7 @@
call assert_equal('Xtest2', bufname('%'))
quit!
call assert_equal('Xtest3', bufname('%'))
- call assert_fails('silent! quit!', 'E162')
+ call assert_fails('silent! quit!', 'E37')
call assert_equal('Xtest1', bufname('%'))
call delete('Xtest1')