microcom.c: Do not append newline to answerback string

Instead, write the newline explicitly after writing the answerback
string.

Signed-off-by: Jonas Rebmann <jre@pengutronix.de>

Author: jonrebm

microcom.c

@@ -181,12 +181,6 @@ int main(int argc, char *argv[])
 	if (optind < argc)
 		main_usage(1, "", "");
 
-	if (answerback) {
-		ret = asprintf((char **)&answerback, "%s\n", answerback);
-		if (ret < 0)
-			exit(1);
-	}
-
 	commands_init();
 	commands_fsl_imx_init();
 

mux.c

@@ -28,10 +28,12 @@ static int handle_receive_buf(struct ios_ops *ios, unsigned char *buf, int len)
 		switch (*buf) {
 		case 5:
 			write_receive_buf(sendbuf, buf - sendbuf);
-			if (answerback)
+			if (answerback) {
 				ios->write(ios, answerback, strlen((char *)answerback));
-			else
+				ios->write(ios, (const unsigned char *)"\n", 1);
+			} else {
 				write_receive_buf(buf, 1);
+			}
 
 			buf += 1;
 			len -= 1;