[3.10] gh-97786: Fix compiler warnings in pytime.c (GH-101826)

[mdickinson]

Fixes compiler warnings in pytime.c..
(cherry picked from commit b1b375e)

• Issue: Compiler warning for _Py_InIntegralTypeRange #97786

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @mdickinson for commit 3d56ece 🤖

If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again.

[gpshead]

!buildbot wasm

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @gpshead for commit a54b679 🤖

The command will test the builders whose names match following regular expression: wasm

The builders matched are:

• wasm32-emscripten node (pthreads) PR
• wasm32-emscripten browser (dynamic linking, no tests) PR
• wasm32-wasi PR
• wasm32-emscripten node (dynamic linking) PR

[abalkin]

Since this has already been merged in main (gh-97786), there isn't real need for a review.

In any case, LGTM. I just added a suggestion that should not hold this from being merged.