Merge pull request ChargeTimeEU#167 from listestalo/bugfix/fix_possible_endless_loop

reset failed flag before sending retry messages

Author: TVolden

ocpp-common/src/main/java/eu/chargetime/ocpp/Communicator.java

@@ -330,6 +330,7 @@ public void run() {
       Object call;
       try {
         while ((call = getRetryMessage()) != null) {
+          failedFlag = false;
           radio.send(call);
           Thread.sleep(DELAY_IN_MILLISECONDS);
           if (!hasFailed()) popRetryMessage();