diff -r 35ca1ba469ec -r 3d14834c56ea razor.c
--- a/razor.c	Sun Nov 04 00:58:57 2007 -0400
+++ b/razor.c	Thu Nov 08 22:45:27 2007 -0500
@@ -470,6 +470,14 @@
 	return importer;
 }
 
+/* Destroy an importer without creating the set. */
+void
+razor_importer_destroy(struct razor_importer *importer)
+{
+	/* FIXME: write this */
+}
+
+
 typedef int (*compare_with_data_func_t)(const void *p1,
 					const void *p,
 					void *data);
@@ -551,6 +559,9 @@
 	unsigned long *map;
 	int i;
 
+	if (nelem == 0)
+		return NULL;
+
 	ctx.size = size;
 	ctx.compare = compare;
 	ctx.data = data;