Added check for idx in get_frame_num().

svn path=/trunk/; revision=24364

1 files changed, 5 insertions, 1 deletions

diff --git a/gtk/io_stat.c b/gtk/io_stat.c
index 9a2dbc73c7..f5ec1d8a5c 100644
--- a/gtk/io_stat.c
+++ b/gtk/io_stat.c
@@ -413,10 +413,14 @@ gtk_iostat_packet(void *g, packet_info *pinfo, epan_dissect_t *edt, const void *
 }
 
 static guint
-get_frame_num(io_stat_t *io, int idx, gboolean first)
+get_frame_num(io_stat_t *io, guint32 idx, gboolean first)
 {
 	guint i, frame_num=0;
 
+	if (idx>io->num_items) {
+		return 0;
+	}
+
 	if (first) {
 		frame_num=io->first_frame_num[idx];
 	}