Kernel: Migrate UDP socket table locking to ProtectedValue

Author: https://github.com/boricj
Commit: 9517100672
Pull-request: https://github.com/SerenityOS/serenity/pull/8851
Reviewed-by: https://github.com/awesomekling ✅
Reviewed-by: https://github.com/bgianfo

Kernel/Net/UDPSocket.h

@@ -7,7 +7,7 @@
 #pragma once
 
 #include <Kernel/KResult.h>
-#include <Kernel/Locking/Lockable.h>
+#include <Kernel/Locking/ProtectedValue.h>
 #include <Kernel/Net/IPv4Socket.h>
 
 namespace Kernel {
@@ -23,7 +23,7 @@ public:
 private:
     explicit UDPSocket(int protocol, NonnullOwnPtr<DoubleBuffer> receive_buffer);
     virtual StringView class_name() const override { return "UDPSocket"; }
-    static Lockable<HashMap<u16, UDPSocket*>>& sockets_by_port();
+    static ProtectedValue<HashMap<u16, UDPSocket*>>& sockets_by_port();
 
     virtual KResultOr<size_t> protocol_receive(ReadonlyBytes raw_ipv4_packet, UserOrKernelBuffer& buffer, size_t buffer_size, int flags) override;
     virtual KResultOr<size_t> protocol_send(const UserOrKernelBuffer&, size_t) override;