NativeUnixSocket: Preload more classes for JNI

FindClass may return null unless we call Class.forName prior to
initialization.

This affects OperationNotSupportedSocketException (a junixsocket class)
and InetSocketAddress, which we now use to detect the "large ports"
capability.

junixsocket-common/src/main/java/org/newsclub/net/unix/NativeUnixSocket.java

@@ -21,6 +21,7 @@
 import java.io.FileDescriptor;
 import java.io.IOException;
 import java.lang.ProcessBuilder.Redirect;
+import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.net.SocketAddress;
@@ -131,6 +132,8 @@ static void initPre() {
     // in some environments, JNI FindClass won't find these classes unless we resolve them first
     tryResolveClass(AbstractSelectableChannel.class.getName());
     tryResolveClass("java.lang.ProcessBuilder$RedirectPipeImpl");
+    tryResolveClass(InetSocketAddress.class.getName());
+    tryResolveClass(OperationNotSupportedSocketException.class.getName());
   }
 
   private static void tryResolveClass(String className) {