[LOW] STR #4067: Dead code in ipp_read_http()?

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I think there is dead code in ipp_read_http().

At cups/ipp.c:3146, there is a
    if (http->data_encoding == HTTP_ENCODE_CHUNKED)
clause that is itself wrapped inside a
    if (http->used > 0 && http->data_encoding == HTTP_ENCODE_LENGTH)
at cups/ipp.c:3117.
I cannot see how http->data_encoding may change in between other than a
memcpy() or memmove() going wild.

There's also a
    if (http->data_encoding != HTTP_ENCODE_CHUNKED)
at line 3156 that seems redundant.

Or what am I missing?

Link: http://www.cups.org/str.php?L4067
Version: 1.5.2