Merge "Stop using deprecated (and removed in C23) ATOMIC_VAR_INIT()." into main am: facb64dcb4

Original change: https://android-review.googlesource.com/c/platform/system/core/+/3528252

Change-Id: I3373f5b1ca972346de44171c482ba683f9e6ed21
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/libsync/sync.c b/libsync/sync.c
index b8c48c7..c4c4472 100644
--- a/libsync/sync.c
+++ b/libsync/sync.c
@@ -117,7 +117,7 @@
     UAPI_MODERN,
     UAPI_LEGACY
 };
-static atomic_int g_uapi_version = ATOMIC_VAR_INIT(UAPI_UNKNOWN);
+static atomic_int g_uapi_version = UAPI_UNKNOWN;
 
 // ---------------------------------------------------------------------------