Paranoia: ensure MyBackendId is InvalidBackendId in a process that has

never executed SIBackendInit().

src/backend/utils/init/globals.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.89 2004/05/29 22:48:21 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.90 2004/05/30 17:58:12 tgl Exp $
  *
  * NOTES
  *	  Globals used all over the place should be declared here and not
@@ -53,7 +53,7 @@ char		postgres_exec_path[MAXPGPATH];	/* full path to backend */
 /* note: currently this is not valid in backend processes */
 #endif
 
-BackendId	MyBackendId;
+BackendId	MyBackendId = InvalidBackendId;
 
 char	   *DatabasePath = NULL;
 Oid			MyDatabaseId = InvalidOid;