wireshark_gen: fix exception on empty match
The peek_all() call fails if the buffer is empty.
diff --git a/wireshark_gen/templates/_oftype_readers.lua b/wireshark_gen/templates/_oftype_readers.lua
index 5b255a5..aa09765 100644
--- a/wireshark_gen/templates/_oftype_readers.lua
+++ b/wireshark_gen/templates/_oftype_readers.lua
@@ -126,7 +126,10 @@
end
local list_len = reader.peek(-2,2):uint()
local reader2 = reader.slice(list_len - 4)
- local list = subtree:add(fields[field_name], reader2.peek_all(0))
+ local list = nil
+ if not reader2.is_empty() then
+ list = subtree:add(fields[field_name], reader2.peek_all(0))
+ end
while not reader2.is_empty() do
local match_len = 4 + reader2.peek(3,1):uint()
local child_reader = reader2.slice(match_len)