Fixed memory leak in EZAudioFile
Fixed memory leak in EZAudioFile

The variable _floatBuffers is allocated but is not subsequently
deallocated (freed). Some memory management was present for
_floatBuffers in this commit:
https://github.com/syedhali/EZAudio/commit/2431b2520496118cdc09af6b99846
61285e38c52. However, this was subsequently commented out in a later
commit:
https://github.com/syedhali/EZAudio/commit/1dc2fc2ba902f6fa9b1f8ec2c0c77
94aa7d66ee2. I have uncommented and improved this.

joehsieh/EZAudio,eigentone11/EZAudio,pranavlathigara/EZAudio,eigentone11/EZAudio,kyroskoh/EZAudio,solomon23/EZAudio,Farteen/EZAudio,kyroskoh/EZAudio,blender/EZAudio,DeskConnect/EZAudio,songxing10000/EZAudio,Farteen/EZAudio,xinxu/EZAudio,xinxu/EZAudio,arisecbf/EZAudio,solomon23/EZAudio,hzwangsiyu/EZAudio,sahara108/EZAudio,DeskConnect/EZAudio,shabbirh/EZAudio,shabbirh/EZAudio,blender/EZAudio,songxing10000/EZAudio,huxia/EZAudio,joehsieh/EZAudio,ale0xB/EZAudio,ale0xB/EZAudio,arisecbf/EZAudio,pranavlathigara/EZAudio,hzwangsiyu/EZAudio,iichenbf/EZAudio,sahara108/EZAudio,huxia/EZAudio,iichenbf/EZAudio