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Optimize AAC

ESP32-audioI2S-master/src/mp3_decoder/mp3_decoder.cpp:3653:28: error: suggest parentheses around '-' inside '<<' [-Werror=parentheses]

varoius speed optimizations, fix warnings, etc

+minor things

(more to follow ;)

+ fix warnings

since hostname can be greater than 256 byes, save lasthost in bigger charbuff
char m_lastHost[512];                // Store the last URL to a webstream

"http://stream.1a-webradio.de/deutsch/mp3-128/vtuner-1a" works now
redirect to new host "http://saw-stream20.radiohost.de/saw-deutsch_128?ref=vtuner-1a&amsparams=vtuner-1a&listenerrmid=78da05c1411283200c05d0bbb09684af965aaf625c60c98c5d601d8c7a7ddf9b10fb30c4883e36ee0302e8dd125ec1356e35db4761e1c3aaa64248fed6a5a6fcfb5356e1aca71ddf55b8ec9d473b085f766e5a3d929b1f42b91a91"

faster string funcs

use __builtin_clz()

..which is much faster :)

Fix some warnings

... re uninitialzed variables and missing braces (if no log level defined)

in connecttoFS() afn must also freed

better solution