hls: Proceed to the next segment at any error code

Previously, we returned any error code except AVERROR_EOF to the
caller - only if AVERROR_EOF or 0 was returned, we proceeded to
the next segment.

With some setups of web servers, using Connection: close in https
and GnuTLS, we don't get a clean error code at the end of segments.
In those cases, just proceed to the next segment.

Tested-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/hls.c

@@ -420,8 +420,6 @@ reload:
     ret = ffurl_read(v->input, buf, buf_size);
     if (ret > 0)
         return ret;
-    if (ret < 0 && ret != AVERROR_EOF)
-        return ret;
     ffurl_close(v->input);
     v->input = NULL;
     v->cur_seq_no++;