package/live555: security bump to version 2019.03.06

package/live555: security bump to version 2019.03.06

Fixes the following security issues:

- CVE-2019-6256: A Denial of Service issue was discovered in the LIVE555
  Streaming Media libraries as used in Live555 Media Server 0.93.  It can
  cause an RTSPServer crash in handleHTTPCmd_TunnelingPOST, when
  RTSP-over-HTTP tunneling is supported, via x-sessioncookie HTTP headers in
  a GET request and a POST request within the same TCP session.  This occurs
  because of a call to an incorrect virtual function pointer in the
  readSocket function in GroupsockHelper.cpp.

- CVE-2019-7314: liblivemedia in Live555 before 2019.02.03 mishandles the
  termination of an RTSP stream after RTP/RTCP-over-RTSP has been set up,
  which could lead to a Use-After-Free error that causes the RTSP server to
  crash (Segmentation fault) or possibly have unspecified other impact.

- CVE-2019-9215: n Live555 before 2019.02.27, malformed headers lead to
  invalid memory access in the parseAuthorizationHeader function.

The normal live555 web site is temporarily unavailable, so use an
alternative _SITE / drop upstream hash.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>