header dongle_pin change

dongle.c

@@ -170,6 +170,7 @@ void free_device(struct device *dev)
 {
 	if (!dev)
 		return;
+
 	free(dev->ip);
 	free(&(dev->usb));
 }
@@ -178,6 +179,7 @@ void free_usb(struct USB *usb)
 {
 	if (!usb)
 		return;
+
 	free(usb->product);
 	free(usb->product_id);
 	free(usb->vendor_id);

dongle_pin.h

@@ -2,5 +2,9 @@
 #define PIN_H
 #include "common.h"
 
-int expose_pin_object(struct ubus_context *ctx);
+static int isdigits(const char *pin);
+static int validate_puk_format(char *puk);
+static int validate_pin_format(char *pin);
+int pin_status(struct blob_buf *bb)
+int check_response(struct json_object *response)
 #endif