Code review suggestion

Co-authored-by: Ralf Jung <[email protected]>

src/concurrency/thread.rs

@@ -1100,6 +1100,6 @@ pub enum TerminatedThreadTls {
     /// Deallocate backing memory of thread-local statics as usual
     Deallocate,
     /// Skip deallocating backing memory of thread-local statics and consider all memory reachable
-    /// from them as not leaked (like global `static`s).
+    /// from them as "allowed to leak" (like global `static`s).
     Leak,
 }