Fix multimedia/zoneminder build on head and 9.3-i386

[olivier]

Summary

PR 210261
Because it "Build fixes which cause a package to become compilable where it was previously failing", there is no PORTREVISION increment.
Poudriere testport Q/A include some warning but seems false warning (more detail in the PR exchange).

• http://dev.bsdrp.net/poudriere/93i386-default/zoneminder-1.30.0.log
• http://dev.bsdrp.net/poudriere/11amd64-default/zoneminder-1.30.0.log

[jadawin]

No need of PORTREVISION ?

[olivier]

In D6854#144341, @jadawin wrote:

No need of PORTREVISION ?

This is how I interpret this patch: This patch fix build on some arch/revision. This mean building of this port previously failed on these arch/revision.
And in chapter "5.2.2.1. PORTREVISION" of the porter's handbook, on the examples of changes which do not require a PORTREVISION bump, we found this point:

• Build fixes which cause a package to become compilable where it was previously failing

This is why I think we didn't need PORTREVISION on this specific case.