miner.h missing extern

miner.h

@@ -1186,7 +1186,7 @@ extern struct work *get_queued(struct cgpu_info *cgpu);
 extern struct work *add_to_work_que(struct work *que, struct work *work);
 extern struct work *del_from_work_que(struct work *que, struct work *work);
 extern struct work *find_work_bymidstate(struct work *que, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen);
-struct work *find_queued_work_bymidstate(struct cgpu_info *cgpu, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen);
+extern struct work *find_queued_work_bymidstate(struct cgpu_info *cgpu, char *midstate, size_t midstatelen, char *data, int offset, size_t datalen);
 extern void work_completed(struct cgpu_info *cgpu, struct work *work);
 extern void hash_queued_work(struct thr_info *mythr);
 extern void tailsprintf(char *f, const char *fmt, ...);