Style fixes, mostly trailing whitespace elimination. No functional change.

Reported by:	pho
MFC after:	3 weeks

tests/sys/netinet/udp_dontroute.c

@@ -47,7 +47,8 @@
  * Sends a single UDP packet to the provided address, with SO_DONTROUTE set
  * I couldn't find a way to do this with builtin utilities like nc(1)
  */
-int main(int argc, char **argv)
+int
+main(int argc, char **argv)
 {
 	struct sockaddr_in dst;
 	int s;