patch 9.0.0788: ModeChanged autocmd not executed when Visual ends with CTRL-C

Problem:    ModeChanged autocmd not executed when Visual mode is ended with
            CTRL-C.
Solution:   Do not trigger the autocmd when got_int is set. (closes #11394)
diff --git a/src/testdir/test_autocmd.vim b/src/testdir/test_autocmd.vim
index 3698fd5..0706e73 100644
--- a/src/testdir/test_autocmd.vim
+++ b/src/testdir/test_autocmd.vim
@@ -3429,6 +3429,18 @@
   unlet g:n_to_c
   unlet g:c_to_n
 
+  let g:n_to_v = 0
+  au ModeChanged n:v let g:n_to_v += 1
+  let g:v_to_n = 0
+  au ModeChanged v:n let g:v_to_n += 1
+  let g:mode_seq += ['v', 'n']
+  call feedkeys("v\<C-C>", 'tnix')
+  call assert_equal(len(g:mode_seq) - 1, g:index)
+  call assert_equal(1, g:n_to_v)
+  call assert_equal(1, g:v_to_n)
+  unlet g:n_to_v
+  unlet g:v_to_n
+
   au! ModeChanged
   delfunc TestMode
   unlet! g:mode_seq