samples/pktgen: Trap SIGINT

Otherwise ^C stops the script, not just pktgen.

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/samples/pktgen/pktgen.conf-1-1-rdos b/samples/pktgen/pktgen.conf-1-1-rdos
index 2834ac7..8f1ce1a 100755
--- a/samples/pktgen/pktgen.conf-1-1-rdos
+++ b/samples/pktgen/pktgen.conf-1-1-rdos
@@ -58,6 +58,7 @@
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"