opti(rwlock): make new a const fn

Author: librelois

async-rwlock/Cargo.toml

@@ -13,7 +13,7 @@ categories = ["asynchronous", "concurrency"]
 readme = "../README.md"
 
 [dependencies]
-async-mutex = "1.1.5"
+async-mutex = { path = "../async-mutex", version = "1.4.0" }
 event-listener = "2.4.0"
 
 [dev-dependencies]

async-rwlock/src/lib.rs

@@ -101,7 +101,7 @@ impl<T> RwLock<T> {
     ///
     /// let lock = RwLock::new(0);
     /// ```
-    pub fn new(t: T) -> RwLock<T> {
+    pub const fn new(t: T) -> RwLock<T> {
         RwLock {
             mutex: Mutex::new(()),
             no_readers: Event::new(),