Add spaces around operator.

src/include/utils/timestamp.h

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.54 2005/08/12 18:23:56 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/utils/timestamp.h,v 1.55 2005/10/07 20:13:16 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */