minor regression

[Igor Schein <igor@txc.com>]

Hi,

          GP/PARI CALCULATOR Version 2.2.7 (development CHANGES-1.804)
            i686 running linux (ix86/GMP-4.1 kernel) 32-bit version
       compiled: Sep 11 2003, gcc-3.2 20020903 (Red Hat Linux 8.0 3.2-7)
                (readline v4.3 enabled, extended help available)

? \p86
   realprecision = 86 significant digits
? setrand(1);rnfkummer(bnrinit(bnfinit(y^4-15*y^3+10*y^2-7*y+17,1),1,1),0);
  ***   precision too low in zsigne.
? \p96
   realprecision = 96 significant digits
? setrand(1);rnfkummer(bnrinit(bnfinit(y^4-15*y^3+10*y^2-7*y+17,1),1,1),0);
? 

Before it would work at \p28.

Thanks

Igor