Remove trailing whitespace

Go through source files and remove all trailing whitespace

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
diff --git a/include/libnetlink.h b/include/libnetlink.h
index 9de3a0b..49e248e 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -23,7 +23,7 @@
 extern int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type);
 extern int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req, int len);
 
-typedef int (*rtnl_filter_t)(const struct sockaddr_nl *, 
+typedef int (*rtnl_filter_t)(const struct sockaddr_nl *,
 			     struct nlmsghdr *n, void *);
 extern int rtnl_dump_filter(struct rtnl_handle *rth, rtnl_filter_t filter,
 			    void *arg1,
@@ -48,7 +48,7 @@
 #define parse_rtattr_nested(tb, max, rta) \
 	(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
 
-extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler, 
+extern int rtnl_listen(struct rtnl_handle *, rtnl_filter_t handler,
 		       void *jarg);
 extern int rtnl_from_file(FILE *, rtnl_filter_t handler,
 		       void *jarg);