getty, sulogin: convert to using bb_msg for syslog output

diff --git a/libbb/vinfo_msg.c b/libbb/vinfo_msg.c
index 82fbda2..613b013 100644
--- a/libbb/vinfo_msg.c
+++ b/libbb/vinfo_msg.c
@@ -22,7 +22,7 @@
 	va_copy(p2, p);
 	if (logmode & LOGMODE_STDIO) {
 		vprintf(s, p);
-		putchar('\n');
+		fputs(msg_eol, stdout);
 	}
 	if (ENABLE_FEATURE_SYSLOG && (logmode & LOGMODE_SYSLOG))
 		vsyslog(LOG_INFO, s, p2);