strace.c: fix a warning reported by -Wold-style-definition

* strace.c (usage): Add void to the list of function argments.

diff --git a/strace.c b/strace.c
index 72343aa47384cdabd3538e6bbf1fb77de74ab11e..962420a9d2b9bac63a16586ee2e9576214f72d58 100644 (file)
--- a/strace.c
+++ b/strace.c
@@ -196,7 +196,7 @@ strerror(int err_no)
 #endif /* HAVE_STERRROR */
 
 static void
-usage()
+usage(void)
 {
        printf("\
 usage: strace [-CdffhiqrtttTvVwxxy] [-I n] [-e expr]...\n\