185194 – textproc/sphinxsearch cannot be installed without DOCS

Port cannot be installed if I have unset DOCS. (I don't need docs installed on each server)

Fix: 

It is caused by unconditionally used sed in Makefile

        ${SED} -e 's/"1"/"8"/' ${DOCSRC}/searchd.1 > ${DOCSRC}/searchd.8

But ${DOCSRC} is set few lines earlier within condition

.if ${PORT_OPTIONS:MDOCS}
DOCS=           doc/sphinx.css doc/sphinx.html doc/sphinx.txt doc/sphinx.xml
DOCSRC=         ${WRKSRC}/doc
.endif

So the line with sed should be conditional too, or DOCSRC set unconditionally.
How-To-Repeat: I have the following line in make.conf

OPTIONS_UNSET= X11 GUI CUPS DOCS EXAMPLES NLS

Then make failed with the following message:

===>  Found saved configuration for sphinxsearch-2.1.4
===> Fetching all distfiles required by sphinxsearch-2.1.4 for building
===>  Extracting for sphinxsearch-2.1.4
=> SHA256 Checksum OK for sphinx-2.1.4-release.tar.gz.
===>  Patching for sphinxsearch-2.1.4
/usr/bin/sed -e 's/"1"/"8"/' /searchd.1 > /searchd.8
sed: /searchd.1: No such file or directory
*** Error code 1

Stop in /usr/ports/textproc/sphinxsearch.
*** Error code 1

Stop in /usr/ports/textproc/sphinxsearch.

===>>> make failed for textproc/sphinxsearch
===>>> Aborting update

===>>> Killing background jobs
Terminated