param: Fix an off by 1 issue and some style fixes.

src/modules/systemlib/param/param.c

@@ -263,25 +263,30 @@ param_find_internal(const char *name, bool notification)
 {
 	param_t middle;
 	param_t front = 0;
-	param_t last = get_param_info_count()-1;
+	param_t last = get_param_info_count() - 1;
 
 	/* perform a binary search of the known parameters */
 
 	while (front <= last) {
-		middle = front + (last-front) / 2;
+		middle = front + (last - front) / 2;
 		int ret = strcmp(name, param_info_base[middle].name);
+
 		if (ret == 0) {
 			if (notification) {
 				param_set_used_internal(middle);
 			}
+
 			return middle;
+
 		} else if (middle == front || middle == last) {
 			/* An end point has been hit, but there has been no match */
 			break;
+
 		} else if (ret < 0) {
 			last = middle - 1;
+
 		} else {
-			front = middle + 1;
+			front = middle;
 		}
 	}
 

src/systemcmds/param/param.c

@@ -216,6 +216,7 @@ param_main(int argc, char *argv[])
 		if (!strcmp(argv[1], "find")) {
 			if (argc >= 3) {
 				return do_find(argv[2]);
+
 			} else {
 				warnx("not enough arguments.\nTry 'param find PARAM_NAME'");
 				return 1;
@@ -341,13 +342,15 @@ do_show(const char *search_string)
 }
 
 static int
-do_find(const char* name)
+do_find(const char *name)
 {
 	param_t ret = param_find_no_notification(name);
+
 	if (ret == PARAM_INVALID) {
 		warnx("Parameter %s not found", name);
 		return 1;
 	}
+
 	printf("Found param %s at index %d\n", name, ret);
 	return 0;
 }