Add work around for return-type issues
for return-type issues use __builtin_unreachable to help gcc diagnostics not to trigger false-positive return-type and add RTC_NOTREACHED macro as well.
Edited by Martin 'JaMa' Jansa
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for return-type issues use __builtin_unreachable to help gcc diagnostics not to trigger false-positive return-type and add RTC_NOTREACHED macro as well.