zero unused io

src/libventi/packet.c

diff --git a/src/libventi/packet.c b/src/libventi/packet.c
index 3ef1b1d..d319893 100644
--- a/src/libventi/packet.c
+++ b/src/libventi/packet.c
@@ -612,7 +612,10 @@
 		size += io->len;
 		io++;
 	}
-
+	for(; io < eio; io++){
+		io->addr = nil;
+		io->len = 0;
+	}
 	return size;
 }