Modernize code by removing use of old style definitions.

Also add -Werror=old-style-definition to enforce new code.
Message-Id: <ZBZ+8xf7GHy2RT/h@jupiter.tail36e24.ts.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/utils/ps.c b/utils/ps.c
index b23dc1e2..91a00a36 100644
--- a/utils/ps.c
+++ b/utils/ps.c
@@ -250,7 +250,7 @@ main(int argc, char *argv[])
     }
 
   /* Returns the name of the current controlling terminal.  */
-  const char *current_tty_name()
+  const char *current_tty_name(void)
     {
       error_t err;
       struct ps_tty *tty;