whitespace cleanup

Remove all trailing whitespace and space before tabs.
diff --git a/tc/tc_filter.c b/tc/tc_filter.c
index c3f2d5f..609fbe9 100644
--- a/tc/tc_filter.c
+++ b/tc/tc_filter.c
@@ -159,7 +159,7 @@
 
 
 	if (d[0])  {
- 		ll_init_map(&rth);
+		ll_init_map(&rth);
 
 		if ((req.t.tcm_ifindex = ll_name_to_index(d)) == 0) {
 			fprintf(stderr, "Cannot find device \"%s\"\n", d);
@@ -326,7 +326,7 @@
 
 	t.tcm_info = TC_H_MAKE(prio<<16, protocol);
 
- 	ll_init_map(&rth);
+	ll_init_map(&rth);
 
 	if (d[0]) {
 		if ((t.tcm_ifindex = ll_name_to_index(d)) == 0) {
@@ -336,12 +336,12 @@
 		filter_ifindex = t.tcm_ifindex;
 	}
 
- 	if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
+	if (rtnl_dump_request(&rth, RTM_GETTFILTER, &t, sizeof(t)) < 0) {
 		perror("Cannot send dump request");
 		return 1;
 	}
 
- 	if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
+	if (rtnl_dump_filter(&rth, print_filter, stdout) < 0) {
 		fprintf(stderr, "Dump terminated\n");
 		return 1;
 	}