Changes

Summary

1. Fix index exception in combined mixing (commit: 4f33b81) (details)

Commit 4f33b81b3033ffb17f4a868d54a969540262ad5b by Florian Spieß Fix index exception in combined mixing (commit: 4f33b81)
	src/main/java/net/dv8tion/jda/core/audio/AudioConnection.java (diff)
	src/main/java/net/dv8tion/jda/core/audio/AudioPacket.java (diff)