target/ppc: Clean up local variable shadowing in kvm_arch_*_registers()

target/ppc: Clean up local variable shadowing in kvm_arch_*_registers()

Remove extra 'i' variable to fix this warning :

  ../target/ppc/kvm.c: In function ‘kvm_arch_put_registers’:
  ../target/ppc/kvm.c:963:13: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
    963 |         int i;
        |             ^
  ../target/ppc/kvm.c:906:9: note: shadowed declaration is here
    906 |     int i;
        |         ^
  ../target/ppc/kvm.c: In function ‘kvm_arch_get_registers’:
  ../target/ppc/kvm.c:1265:13: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
   1265 |         int i;
        |             ^
  ../target/ppc/kvm.c:1212:9: note: shadowed declaration is here
   1212 |     int i, ret;
        |         ^

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20231006053526.1031252-1-clg@kaod.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>