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Crash using library : [__NSMallocBlock__ handleClientConnectionStateChange:]: unrecognized selector sent to instance 0x17044e460 #108

Description

@fceldeiro

PubNub version : PubNub (= 3.7.11)

In my app i do the following (viewDidLoad)

"PNConfiguration *configuration = [PNConfiguration configurationForOrigin:kPubNubURL
                                                                  publishKey:kPubNubPublishKey
                                                                subscribeKey:kPubNubSubscribeKey
                                                                   secretKey:kPubNubSecretKey
                                                                   cipherKey:kPubNubCipherKey];
    configuration.useSecureConnection = YES;

self.pubNub = [PubNub connectingClientWithConfiguration:configuration andSuccessBlock:^(NSString *origin) {
  [self.pubNub setDelegate:self];
  [self.pubNub setClientIdentifier:self.myselfChatMember.chatId];
  self.channel = [PNChannel channelWithName:[self channelKey] shouldObservePresence:NO];
  [self.pubNub subscribeOn:@[self.channel]]; 
  [self loadChatHistory];

    } errorBlock:^(PNError *error) {
        DLog("%@",error);
    }];"

Then in my dealloc

[self.pubNub setDelegate:nil];
[self.pubNub unsubscribeFrom:@[self.channel]];
[self.pubNub disconnect];
self.pubNub = nil;
}

If i pop that controller ocasionally i get a crash.
Seems like after the PubNub object is released is still trying to call a notification.

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