log IOException in JMX

Author: thurka

visualvm/jmx/src/org/graalvm/visualvm/jmx/impl/ProxyClient.java

@@ -290,6 +290,7 @@ private void tryConnect() throws IOException {
             try {
                 jmxc.connect(env);
             } catch (java.io.IOException e) {
+                LOGGER.log(Level.INFO, "tryConnect", e);   // NOI18N
                 // Likely a SSL-protected RMI registry
                 if ("rmi".equals(jmxUrl.getProtocol())) { // NOI18N
                     env.put("com.sun.jndi.rmi.factory.socket", sslRMIClientSocketFactory); // NOI18N