statsc: free parsed params in case of error

- wrap some lines of codes in blocks

src/modules/statsc/statsc_mod.c

@@ -205,7 +205,7 @@ int statsc_nmap_add(str *sname, str *rname)
 		return 0;
 	}
 	sl = _statsc_info->slist;
-	while(sl->next!=NULL) sl = sl->next;
+	while(sl->next!=NULL) { sl = sl->next; }
 	sl->next = sm;
 	_statsc_info->slots++;
 	return 0;
@@ -287,18 +287,23 @@ int statsc_track_param(modparam_t type, void* val)
 	param_t *pit=NULL;
 	str s;
 
-	if(val==NULL)
+	if(val==NULL) {
 		return -1;
-	if(statsc_init()<0)
+	}
+	if(statsc_init()<0) {
 		return -1;
+	}
 	s.s = (char*)val;
 	s.len = strlen(s.s);
-	if(s.s[s.len-1]==';')
+	if(s.s[s.len-1]==';') {
 		s.len--;
-	if (parse_params(&s, CLASS_ANY, &phooks, &params_list)<0)
+	}
+	if (parse_params(&s, CLASS_ANY, &phooks, &params_list)<0) {
 		return -1;
+	}
 	for (pit = params_list; pit; pit=pit->next) {
 		if(statsc_nmap_add(&pit->name, &pit->body)<0) {
+			free_params(params_list);
 			LM_ERR("cannot enable tracking statistics\n");
 			return -1;
 		}
@@ -369,8 +374,9 @@ static void statsc_rpc_report(rpc_t* rpc, void* ctx)
 			sname.s = NULL;
 		}
 		rpc->scan(ctx, "*d", &range);
-		if(range<0 || range>statsc_items)
+		if(range<0 || range>statsc_items) {
 			range = 0;
+		}
 	}
 
 	tn = time(NULL);