Re: list_free in addRangeTableEntryForJoin

 >Now you need to analyze whether the memory in question is not managed
by a Context
I've already analyzed. Let's explain details:


1. analyze.c
1718: List* targetnames;
1815: targetnames = NIL;
1848: targetnames = lappend(targetnames, makeString(colName));
1871: addRangeTableEntryForJoin(...);
=> list_free(targetnames);

2. parse_clause.c
1163: List* res_colnames;
1289: res_colnames = NIL;
1324: foreach(col, res_colnames);
1396: res_colnames = lappend(res_colnames, lfirst(ucol));
1520, 1525: extractRemainingColumns(...);
        |
     290: *res_colnames = lappend(*res_colnames, lfirst(lc));
1543: addRangeTableEntryForJoin(...);
=> list_free(res_colnames);


As you can see, there are no other pointers working with this block of
memory,

and all operations above are either read-only or append nodes to
the lists. If I am mistaken, please correct me.
Furthermore, I will call `list_free` immediately after
`addRangeTableEntryForJoin()`. The new patch is attached.