Also do tc_core_time2big argument (long->unsigned).

tc_core_time2big only used in tc/q_netem.c where it gets passed an unsigned.

Signed-off-by: Andreas Henriksson <andreas@fatal.se>
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
diff --git a/tc/tc_core.c b/tc/tc_core.c
index 8c3a2ac..1365e08 100644
--- a/tc/tc_core.c
+++ b/tc/tc_core.c
@@ -26,7 +26,7 @@
 static double tick_in_usec = 1;
 static double clock_factor = 1;
 
-int tc_core_time2big(long time)
+int tc_core_time2big(unsigned time)
 {
 	__u64 t = time;