Fix bug #7251

We're already checking in gtk if end highlight offsets don't exceed len.
Do the same for start offset.

I wonder if it this checks should be also done when adding items to tree...

svn path=/trunk/; revision=42596

1 files changed, 2 insertions, 2 deletions

diff --git a/ui/gtk/main_proto_draw.c b/ui/gtk/main_proto_draw.c
index cd773e9da0..24860b2f9e 100644
--- a/ui/gtk/main_proto_draw.c
+++ b/ui/gtk/main_proto_draw.c
@@ -1680,10 +1680,10 @@ packet_hex_print(GtkWidget *bv, const guint8 *pd, frame_data *fd,
         }
     }
 
-    if (bstart >= 0 && blen > 0) {
+    if (bstart >= 0 && blen > 0 && (guint)bstart < len) {
         bend = bstart + blen;
     }
-    if (astart >= 0 && alen > 0) {
+    if (astart >= 0 && alen > 0 && (guint)astart < len) {
         aend = astart + alen;
     }