Mark usage() as _X_COLD _X_NORETURN

Suggested by clang:
xcompmgr.c:1963:1: warning: function 'usage' could be declared with
  attribute 'noreturn' [-Wmissing-noreturn]
{
^

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/xcompmgr.c b/xcompmgr.c
index 55e2085..4443779 100644
--- a/xcompmgr.c
+++ b/xcompmgr.c
@@ -1958,7 +1958,7 @@ ev_window (XEvent *ev)
 }
 #endif
 
-static void
+static void _X_COLD _X_NORETURN
 usage (const char *program)
 {
     fprintf (stderr, "%s v%s\n", program, PACKAGE_VERSION);