error.c: Also undefine 'A' macro used for cp_printers definition.

2001-03-26  Phil Edwards  <pme@sources.redhat.com>

	* error.c:  Also undefine 'A' macro used for cp_printers definition.

From-SVN: r40854

gcc/cp/error.c

@@ -175,6 +175,7 @@ cp_printer * cp_printers[256] =
   o, o, o, o, o, o, o, o, o, o, o, o, o, o, o, o, /* 0x60 */
   o, o, o, o, o, o, o, o, o, o, o, o, o, o, o, o, /* 0x70 */
 };
+#undef A
 #undef C
 #undef D
 #undef E