(yy::Parser::pact_ninf_, yy::Parser::table_ninf_):

(yy::Parser::pact_ninf_, yy::Parser::table_ninf_):
Declare to be of type suitable for the ninf value itself, not of
type suitable for the corresponding table, since the latter might
be unsigned but the ninf value might be negative.  This fixes a
bug reported by Alexandre Duret-Lutz in
<http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00017.html>.