Add \n to end of output for psql \s with no history file name.

This prevents the next psql prompt from showing up on the end of the
last history line.

src/bin/psql/command.c

@@ -3,7 +3,7 @@
  *
  * Copyright (c) 2000-2004, PostgreSQL Global Development Group
  *
- * $PostgreSQL: pgsql/src/bin/psql/command.c,v 1.136 2004/11/30 19:01:28 momjian Exp $
+ * $PostgreSQL: pgsql/src/bin/psql/command.c,v 1.137 2004/11/30 20:00:34 momjian Exp $
  */
 #include "postgres_fe.h"
 #include "command.h"
@@ -648,6 +648,8 @@ exec_command(const char *cmd,
 
 		if (success && !quiet && fname)
 			printf(gettext("Wrote history to file \"%s\".\n"), fname);
+		if (!fname)
+			putchar('\n');
 		free(fname);
 	}