JFFS2: fix printk argument type warning

fs/jffs2/gc.c:832: warning: signed size_t format, different type arg 
(arg 3)
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

fs/jffs2/gc.c

@@ -831,7 +831,7 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
 				continue;
 			}
 			if (retlen != rawlen) {
-				printk(KERN_WARNING "jffs2_g_c_deletion_dirent(): Short read (%zd not %zd) reading header from obsolete node at %08x\n",
+				printk(KERN_WARNING "jffs2_g_c_deletion_dirent(): Short read (%zd not %u) reading header from obsolete node at %08x\n",
 				       retlen, rawlen, ref_offset(raw));
 				continue;
 			}