Add From<&T> for Box<T> implementations for ServerName, DeviceId

ruma-identifiers/src/device_id.rs

@@ -58,6 +58,12 @@ impl ToOwned for DeviceId {
     }
 }
 
+impl From<&DeviceId> for Box<DeviceId> {
+    fn from(id: &DeviceId) -> Self {
+        id.to_owned()
+    }
+}
+
 impl AsRef<str> for DeviceId {
     fn as_ref(&self) -> &str {
         self.as_str()

ruma-identifiers/src/server_name.rs

@@ -48,6 +48,12 @@ impl ToOwned for ServerName {
     }
 }
 
+impl From<&ServerName> for Box<ServerName> {
+    fn from(s: &ServerName) -> Self {
+        s.to_owned()
+    }
+}
+
 pub(crate) fn validate(server_name: &str) -> Result<(), Error> {
     use std::net::Ipv6Addr;
 
@@ -114,8 +120,8 @@ impl AsRef<str> for Box<ServerName> {
 }
 
 impl From<Box<ServerName>> for String {
-    fn from(id: Box<ServerName>) -> Self {
-        id.into_owned().into()
+    fn from(s: Box<ServerName>) -> Self {
+        s.into_owned().into()
     }
 }