x11-wm/fluxbox: x11-wm/fluxbox: apply upstream patch for multiple bugs

Fixes upstream bugs 1058, 1102, 1111, and 1140. Fluxbox hasn't made a
release for 3 years, so we should stop waiting and patch our ports tree.

https://github.com/fluxbox/fluxbox/commit/dcdde4d32c93d01df205bc06d7dfcbd356be031f
https://sourceforge.net/p/fluxbox/bugs/1140/
https://sourceforge.net/p/fluxbox/bugs/1111/
https://sourceforge.net/p/fluxbox/bugs/1102/
https://sourceforge.net/p/fluxbox/bugs/1058/

PR: 227792
Approved by: maintainer timeout (jgh)