Fixed dueling NPE #650
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Fixed dueling NPE #650
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Why was this null? Right clicking player and sending duel request via "Challenge" option produces an NPE, because packet is null, but ChallengePlayer checks packet.getOpcode without checking if packet is not null
We don't know if we will receive good data so might as well check it.
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Why was this null? Right clicking player and sending duel request via "Challenge" option produces an NPE, because packet is null, but ChallengePlayer checks packet.getOpcode() value without checking if packet is null first. Dueling, sending a challenge, etc all that still works fine even with an NPE but why have an NPE in the first place?
This closes #639 but is it correct?