shithub: dumb

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Require at least one instrument and one pattern.

--- a/src/it/readxm.c

+++ b/src/it/readxm.c

@@ -910,7 +910,7 @@

 	/* sanity checks */

 	// XXX

 	i = header_size - 4 - 2 * 8; /* Maximum number of orders expected */

-	if (dumbfile_error(f) || sigdata->n_orders <= 0 || sigdata->n_orders > i || sigdata->n_patterns > 256 || sigdata->n_instruments > 256 || n_channels > DUMB_IT_N_CHANNELS) {

+	if (dumbfile_error(f) || sigdata->n_orders <= 0 || sigdata->n_orders > i || !sigdata->n_patterns || sigdata->n_patterns > 256 || !sigdata->n_instruments || sigdata->n_instruments > 256 || n_channels > DUMB_IT_N_CHANNELS) {

 		_dumb_it_unload_sigdata(sigdata);

 		return NULL;

 	}