fetch-object.h: add missing declaration (hdr-check)

Signed-off-by: Ramsay Jones <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: ramsay-jones

fetch-object.h

@@ -1,6 +1,8 @@
 #ifndef FETCH_OBJECT_H
 #define FETCH_OBJECT_H
 
+struct object_id;
+
 void fetch_objects(const char *remote_name, const struct object_id *oids,
 		   int oid_nr);