Comment out code pfree()'ing a list header after list_concatspeedup/slab2-experimental

Identified with the following coccinelle spatch:
@@
typedef List;
identifier x;
@@

List* x;
...
-pfree(x);
+pfree(x);//FIXME listfree:

2 files changed, 6 insertions, 3 deletions

diff --git a/src/backend/optimizer/util/clauses.c b/src/backend/optimizer/util/clauses.c
index bad4bd821a..3a78a06484 100644
--- a/src/backend/optimizer/util/clauses.c
+++ b/src/backend/optimizer/util/clauses.c
@@ -3162,7 +3162,8 @@ simplify_or_arguments(List *args,
 				List	   *oldhdr = unprocessed_args;
 
 				unprocessed_args = list_concat(subargs, unprocessed_args);
-				pfree(oldhdr);
+				//FIXME listfree:
+				//pfree(oldhdr);
 			}
 			continue;
 		}
@@ -3264,7 +3265,8 @@ simplify_and_arguments(List *args,
 				List	   *oldhdr = unprocessed_args;
 
 				unprocessed_args = list_concat(subargs, unprocessed_args);
-				pfree(oldhdr);
+				//FIXME listfree
+				//pfree(oldhdr);
 			}
 			continue;
 		}
diff --git a/src/backend/parser/parse_clause.c b/src/backend/parser/parse_clause.c
index 0f70aa8923..2d235225d7 100644
--- a/src/backend/parser/parse_clause.c
+++ b/src/backend/parser/parse_clause.c
@@ -782,7 +782,8 @@ transformFromClauseItem(ParseState *pstate, Node *n,
 		my_relnamespace = list_concat(l_relnamespace, r_relnamespace);
 		my_containedRels = bms_join(l_containedRels, r_containedRels);
 
-		//FIXME: pfree(r_relnamespace);	/* free unneeded list header */
+		//FIXME listfree:
+		//pfree(r_relnamespace);/* free unneeded list header */
 
 		/*
 		 * Extract column name and var lists from both subtrees