[PATCH][BUG FIX] Pointer var initilialized with boolean.

Hi,
Typo mystake?
Pointer var initilialized with boolean.

Best regards.
Ranier Vilela

--- \dll\postgresql-12.0\a\backend\commands\trigger.c    Mon Sep 30 17:06:55 2019
+++ trigger.c    Fri Nov 22 14:20:56 2019
@@ -2536,7 +2536,7 @@
                      TupleTableSlot *slot)
 {
     TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
-    HeapTuple    newtuple = false;
+    HeapTuple    newtuple = NULL;
     bool        should_free;
     TriggerData LocTriggerData;
     int            i;
@@ -3178,7 +3178,7 @@
 {
     TriggerDesc *trigdesc = relinfo->ri_TrigDesc;
     TupleTableSlot *oldslot = ExecGetTriggerOldSlot(estate, relinfo);
-    HeapTuple    newtuple = false;
+    HeapTuple    newtuple = NULL;
     bool        should_free;
     TriggerData LocTriggerData;
     int            i;