MT#55283 signed refcount for consistency

Change-Id: I56008b19b60988127634c70e8703297f6059b93c

kernel-module/nft_rtpengine.c

@@ -884,7 +884,7 @@ static struct rtpengine_table *new_table(void) {
 
 
 static inline void __ref_get(void *p, atomic_t *refcnt) {
-	DBG("ref_get(%p) - refcnt is %u\n", p, atomic_read(refcnt));
+	DBG("ref_get(%p) - refcnt is %d\n", p, atomic_read(refcnt));
 	atomic_inc(refcnt);
 }
 #define ref_get(o) __ref_get(o, &(o)->refcnt)

lib/obj.h

@@ -39,7 +39,7 @@ struct obj {
 	uint32_t		magic;
 	char			*type;
 #endif
-	unsigned int		ref;
+	int			ref;
 	void			(*clear_func)(void *);
 	void			(*free_func)(void *);
 };