vim-patch:8.2.1000: get error when leaving Ex mode with :visual

Problem:    Get error when leaving Ex mode with :visual and a CmdLineEnter
            autocommand was used.
Solution:   Reset ex_pressedreturn. (closes vim/vim#6293)
158ea175a9

src/nvim/ex_docmd.c

@@ -7305,6 +7305,7 @@ do_exedit(
   if (exmode_active && (eap->cmdidx == CMD_visual
                         || eap->cmdidx == CMD_view)) {
     exmode_active = FALSE;
+    ex_pressedreturn = false;
     if (*eap->arg == NUL) {
       /* Special case:  ":global/pat/visual\NLvi-commands" */
       if (global_busy) {