raop: Always read headers from wire
raop: Always read headers from wire

Otherwise they can be mixed up with the next request. Until now, the
connection was always terminated after an error. However, with
authentication, the request can be repeated with authentication
information.

Signed-off-by: Michael Hanselmann <61c9b2b17db77a27841bbeeabff923448b0f6388@hansmi.ch>
Signed-off-by: Rémi Denis-Courmont <f0699137713be92736351a0674e79536595e4a60@remlab.net>

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