removed a lot of trailing \n in bb_msg() calls. It is added
automatically by function itself.

diff --git a/miscutils/rx.c b/miscutils/rx.c
index 4cc4913..91606ec 100644
--- a/miscutils/rx.c
+++ b/miscutils/rx.c
@@ -266,7 +266,7 @@
 	filefd = xopen3(fn, O_RDWR|O_CREAT|O_TRUNC, 0666);
 
 	if (tcgetattr(ttyfd, &tty) < 0)
-			bb_error_msg_and_die("%s: tcgetattr failed: %m\n", argv[0]);
+			bb_perror_msg_and_die("%s: tcgetattr failed", argv[0]);
 
 	orig_tty = tty;
 
@@ -284,7 +284,7 @@
 	tcsetattr(ttyfd, TCSAFLUSH, &orig_tty);
 
 	if (n < 0)
-			bb_error_msg_and_die("\n%s: receive failed:\n  %s\n",
+		bb_error_msg_and_die("\n%s: receive failed:\n  %s",
 							   argv[0], error_buf);
 
 	bb_fflush_stdout_and_exit(EXIT_SUCCESS);