testsuite: Fix two pastos As mentioned in https://sourceware.org/pipermail/libc-alpha/2026-August/179946.html there are two spots which use unnecessarily larger _BitInt types on the rhs of comparisons. This patch fixes it. 2026-08-24 Jakub Jelinek <jakub@redhat.com> * gcc.dg/builtin-stdc-bit-1.c (main): Fix two pastos. (cherry picked from commit 85a3d553207ae1dddc51cdcbdc036c9e6726f8ba)