xfs: fix memory leak in xlog_recover_add_to_trans

Free the memory in error path of xlog_recover_add_to_trans().
Normally this memory is freed in recovery pass2, but is leaked
in the error path.

Signed-off-by: Mark Tinguely <[e-mail]>
Reviewed-by: Eric Sandeen <[e-mail]>
Signed-off-by: Ben Myers <[e-mail]>

fs/xfs/xfs_log_recover.c

···
 		"bad number of regions (%d) in inode log format",
 				  in_f->ilf_size);
 			ASSERT(0);
+			free(ptr);
 			return XFS_ERROR(EIO);
 		}