shithub: dumb

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Fix empty pattern so it returns an empty structure.

--- a/src/it/readpsm.c

+++ b/src/it/readpsm.c

@@ -162,7 +162,12 @@

 	nrows = data[0] | (data[1] << 8);

-	if (!nrows) return 0;

+	if (!nrows) {

+		pattern->n_rows = 0;

+		pattern->n_entries = 0;

+		pattern->entry = NULL;

+		return 0;

+	}

 	pattern->n_rows = nrows;