Remove trailing whitespace

Go through source files and remove all trailing whitespace

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
diff --git a/tc/tc_filter.c b/tc/tc_filter.c
index 3341b13..3e102cd 100644
--- a/tc/tc_filter.c
+++ b/tc/tc_filter.c
@@ -177,7 +177,7 @@
 static __u32 filter_protocol;
 
 int print_filter(const struct sockaddr_nl *who,
-			struct nlmsghdr *n, 
+			struct nlmsghdr *n,
 			void *arg)
 {
 	FILE *fp = (FILE*)arg;