--- src/util/prindex.c
+++ src/util/prindex.c
@@ -115,7 +115,7 @@
 void
 walk_index(MdbHandle *mdb, MdbIndex *idx)
 {
-	int start, len;
+	int start = 0, len = 0; // I seriously doubt this function does anything useful.
 	guint32 pg;
 	guint16 row;
 	MdbHandle *mdbidx;
