Stack Thunk - check saved a1 before using and zero after using#9252
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Post esp8266#9224, allow to call 'stack_thunk_yield()' outside of bssl context Reset 'stack_thunk_save' before returning from 'thunk_...'ed function
correctly cherry-picked mcspr/esp8266-Arduino#653ee92eb83e48868960ca0f6c44966dfaa5937d
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Post #9224, allow to call 'stack_thunk_yield()' outside of bssl context
Reset 'stack_thunk_save' before returning from 'thunk_...'ed function