UnixSocketChannel is SocketChannel so flip type checks

Author: headius

core/src/main/java/org/jruby/ext/socket/RubySocket.java

@@ -519,7 +519,14 @@ private boolean tryConnect(ThreadContext context, Channel channel, SocketAddress
 
                     while (true) {
                         boolean result = true;
-                        if (channel instanceof SocketChannel) {
+                        if (channel instanceof UnixSocketChannel unix) {
+                            if (unix.isConnectionPending()) {
+                                // connection initiated but not finished
+                                result = unix.finishConnect();
+                            } else {
+                                result = unix.connect(addr);
+                            }
+                        } else if (channel instanceof SocketChannel) {
                             SocketChannel socket = (SocketChannel) channel;
 
                             if (socket.isConnected()) {
@@ -530,9 +537,6 @@ private boolean tryConnect(ThreadContext context, Channel channel, SocketAddress
                             } else {
                                 result = socket.connect(addr);
                             }
-                        } else if (channel instanceof UnixSocketChannel) {
-                            result = ((UnixSocketChannel) channel).connect((UnixSocketAddress) addr);
-
                         } else if (channel instanceof DatagramChannel datagram) {
                             datagram.connect(addr);
                         } else {