refclock: fix compiler warning in SOCK error message

diff --git a/refclock_sock.c b/refclock_sock.c
index f746aa544cd0308ebfbc0af26d9a4112f79b0d8a..97f740b24a95881b693bc10428930671dcd027fb 100644 (file)
--- a/refclock_sock.c
+++ b/refclock_sock.c
@@ -64,7 +64,7 @@ static void read_sample(void *anything)
 
   if (s != sizeof (sample)) {
     LOG(LOGS_WARN, LOGF_Refclock, "Unexpected length of SOCK sample : %d != %ld",
-        s, sizeof (sample));
+        s, (long)sizeof (sample));
     return;
   }