webmcp: framework/env/trace/_new

webmcp

Correct handling of nil's in return tuples in execute.chunk{...}

rev	line source
jbe/bsw@0	1 function trace._new_entry(node)
jbe/bsw@0	2 local node = node or {}
jbe/bsw@0	3 table.insert(trace._stack[#trace._stack], node)
jbe/bsw@0	4 return node
jbe/bsw@0	5 end