fs: Fix typo issue

Change 'inacitve' to 'inactive'.
Signed-off-by: zuoqilin <zuoqilin@yulong.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>

fs/jfs/jfs_dmap.c

@@ -3660,7 +3660,7 @@ void dbFinalizeBmap(struct inode *ipbmap)
 	 * (the leftmost ag with average free space in it);
 	 */
 //agpref:
-	/* get the number of active ags and inacitve ags */
+	/* get the number of active ags and inactive ags */
 	actags = bmp->db_maxag + 1;
 	inactags = bmp->db_numag - actags;
 	ag_rem = bmp->db_mapsize & (bmp->db_agsize - 1);	/* ??? */