[BUG FIX] Uninitialized var fargtypes used.

Hi,
Can anyone check this bug fix?

Thanks.
Ranier Vilela

--- \dll\postgresql-12.0\a\backend\commands\event_trigger.c    Mon Sep 30 17:06:55 2019
+++ event_trigger.c    Mon Nov 11 13:52:35 2019
@@ -171,7 +171,7 @@
     HeapTuple    tuple;
     Oid            funcoid;
     Oid            funcrettype;
-    Oid            fargtypes[1];    /* dummy */
+    Oid            fargtypes[1] = {InvalidOid, InvalidOid};    /* dummy */
     Oid            evtowner = GetUserId();
     ListCell   *lc;
     List       *tags = NULL;