HTTPClient: Don't attempt to process the client if closed

This state check is not sufficent to know if the request has been sent.
If the request has been sent then an error may occur because the ClientHTTPRequest body provider is not resettable.
This can result in an exception like (in the case with a single sized body):
java.util.NoSuchElementException: No elements remaining: 2
  org.threadly.util.ArrayIterator.next (ArrayIterator.java:84)
  org.threadly.litesockets.protocols.http.request.ClientHTTPRequest.nextBodySection (ClientHTTPRequest.java:65)
  org.threadly.litesockets.client.http.HTTPClient.process (HTTPClient.java:416)
  org.threadly.litesockets.client.http.HTTPClient.access$1300 (HTTPClient.java:61)
  org.threadly.litesockets.client.http.HTTPClient$MainClientProcessor.onClose (HTTPClient.java:595)
  org.threadly.litesockets.Client.lambda$callClosers$0 (Client.java:276)
  org.threadly.litesockets.Client.runListener (Client.java:294)
  org.threadly.litesockets.Client.callClosers (Client.java:273)
  org.threadly.litesockets.TCPClient.lambda$close$0 (TCPClient.java:173)
  org.threadly.concurrent.wrapper.KeyDistributedExecutor$TaskQueueWorker.runTask (KeyDistributedExecutor.java:448)
  org.threadly.concurrent.wrapper.KeyDistributedExecutor$TaskQueueWorker.run (KeyDistributedExecutor.java:502)
  org.threadly.concurrent.AbstractPriorityScheduler$OneTimeTaskWrapper.runTask (AbstractPriorityScheduler.java:715)
  org.threadly.concurrent.PriorityScheduler$Worker.executeTasksWhileRunning (PriorityScheduler.java:956)
  org.threadly.concurrent.PriorityScheduler$Worker.run (PriorityScheduler.java:963)
  java.lang.Thread.run (Thread.java:834)

Since the body may be sourced from an InputStream or other means which can't be retried by the library, retry logic needs to be done at the library user level.
This change will instead just communicate the connection close error out so it can be retried there.

Author: jentfoo

client/src/main/java/org/threadly/litesockets/client/http/HTTPClient.java

@@ -589,11 +589,8 @@ public void onClose(Client client) {
 
       client.close();
       if(hrw != null) {
-        boolean wasProcessing = hrw.hrp.isProcessing();
         hrw.hrp.connectionClosed();
-        if(! hrw.slf.isDone() && ! wasProcessing) {
-          process(hrw);
-        } else {
+        if(! hrw.slf.isDone()) {
           hrw.slf.setFailure(new HTTPParsingException("Did not get complete body!"));
         }
       }