Snippets for mpfr 4.2.2 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/mpfr/4.2.2/3.fc44/data/logs/s390x/build.log.

• exp2m1.c:67:16: warning: variable 'nloop' set but not used [-Wunused-but-set-variable=]
     67 |   int inexact, nloop;
        |                ^~~~~
  

• exp10m1.c:62:16: warning: variable 'nloop' set but not used [-Wunused-but-set-variable=]
     62 |   int inexact, nloop;
        |                ^~~~~
  

• tdiv.c:1081:13: warning: variable ‘err’ set but not used [-Wunused-but-set-variable=]
   1081 |   int inex, err = 0;
        |             ^~~