vim-patch:8.2.0265: "eval" after "if 0" doesn't check for following command

Problem:    "eval" after "if 0" doesn't check for following command.
Solution:   Add "eval" to list of commands that check for a following command.
            (closes vim/vim#5640)
a76b31542e

src/nvim/ex_docmd.c

@@ -1857,6 +1857,7 @@ static char_u * do_one_cmd(char_u **cmdlinep,
     case CMD_echoerr:
     case CMD_echomsg:
     case CMD_echon:
+    case CMD_eval:
     case CMD_execute:
     case CMD_filter:
     case CMD_help: