Merge "tls.h: say `(void)` instead of `()` for pre-C23 C source." into main am: 34ff9c47c8

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3537059

Change-Id: I584f168ad400565f22ce79df9dae3de3f6a2765f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>