Filter: Rename "result" to "add_metric".

The field "result" is in fact an additional cost.

configuration.c

@@ -346,16 +346,16 @@ parse_filter(int c, gnc_t gnc, void *closure, struct filter **filter_return)
             filter->ifname = interface;
             filter->ifindex = if_nametoindex(interface);
         } else if(strcmp(token, "allow") == 0) {
-            filter->result = 0;
+            filter->add_metric = 0;
         } else if(strcmp(token, "deny") == 0) {
-            filter->result = INFINITY;
+            filter->add_metric = INFINITY;
         } else if(strcmp(token, "metric") == 0) {
             int metric;
             c = getint(c, &metric, gnc, closure);
             if(c < -1) goto error;
             if(metric <= 0 || metric > INFINITY)
                 goto error;
-            filter->result = metric;
+            filter->add_metric = metric;
         } else {
             goto error;
         }
@@ -929,7 +929,7 @@ do_filter(struct filter *f, const unsigned char *id,
 {
     while(f) {
         if(filter_match(f, id, prefix, plen, neigh, ifindex, proto))
-            return f->result;
+            return f->add_metric;
         f = f->next;
     }
     return -1;

configuration.h

@@ -30,7 +30,7 @@ struct filter {
     unsigned char plen_ge, plen_le;
     unsigned char *neigh;
     int proto;                  /* May be negative */
-    unsigned int result;
+    unsigned int add_metric;
     struct filter *next;
 };