edit: Fix history processing on running old command

currbuf_valid needs to be cleared when an old command from history is
processed to avoid leaving a bogus entry that makes history_prev() skip
the last entry in history.

Signed-hostap: Jouni Malinen <j@w1.fi>

src/utils/edit.c

@@ -345,7 +345,7 @@ static void insert_char(int c)
 
 static void process_cmd(void)
 {
-
+	currbuf_valid = 0;
 	if (cmdbuf_len == 0) {
 		printf("\n%s> ", ps2 ? ps2 : "");
 		fflush(stdout);