Initialize or set a couple of variables to suppress compiler warnings.

 These were for cases protected by elog(ERROR) exits, but may as well
 keep the compiler happy. Not sure why they don't show up on my gcc-2.96.x
 version of the compiler.

src/backend/commands/variable.c

@@ -9,7 +9,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.62 2002/04/21 19:12:46 thomas Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.63 2002/04/21 21:35:17 thomas Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -259,7 +259,7 @@ parse_datestyle_internal(char *value)
 static bool
 parse_datestyle(List *args)
 {
-	int			rstat;
+	int			rstat = FALSE;
 	List	   *arg;
 	char	   *value;
 
@@ -295,6 +295,7 @@ parse_datestyle(List *args)
 		else
 		{
 			elog(ERROR, "SET DATESTYLE argument is not valid");
+			value = NULL;
 		}
 
 		rstat = parse_datestyle_internal(value);