updated for version 7.4.403

Problem:    Valgrind reports errors when running test 72. (Dominique Pelle)
Solution:   Reset the local 'cryptmethod' option before storing the seed.
            Set the seed in the memfile even when there is no block0 yet.

src/fileio.c

@@ -2944,6 +2944,7 @@ check_for_cryptkey(cryptkey, ptr, sizep, filesizep, newfile, fname, did_ask)
 	 * Avoids accidentally overwriting the file with garbage. */
 	curbuf->b_p_ro = TRUE;
 
+	/* Set the cryptmethod local to the buffer. */
 	crypt_set_cm_option(curbuf, method);
 	if (cryptkey == NULL && !*did_ask)
 	{