Require parentheses for #align(N)

core/thread/thread_unix.odin

@@ -10,7 +10,7 @@ CAS :: intrinsics.atomic_compare_exchange_strong
 
 // NOTE(tetra): Aligned here because of core/unix/pthread_linux.odin/pthread_t.
 // Also see core/sys/darwin/mach_darwin.odin/semaphore_t.
-Thread_Os_Specific :: struct #align 16 {
+Thread_Os_Specific :: struct #align(16) {
 	unix_thread: unix.pthread_t, // NOTE: very large on Darwin, small on Linux.
 	cond:        sync.Cond,
 	mutex:       sync.Mutex,