[GRASS-git] [OSGeo/grass-addons] 9e7971: Fix crash with maxit option and python-cvxopt test

[Markus Neteler]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: 9e79714b272ea82c7972188db9b46c6dd2550ef9
      https://github.com/OSGeo/grass-addons/commit/9e79714b272ea82c7972188db9b46c6dd2550ef9
  Author: Markus Neteler <neteler at gmail.com>
  Date:   2019-06-27 (Thu, 27 Jun 2019)

  Changed paths:
    M grass7/imagery/i.pysptools.unmix/i.pysptools.unmix.py

  Log Message:
  -----------
  Fix crash with maxit option and python-cvxopt test

* fix crash if "maxit" option was not set by user
* test if python-cvxopt dependency is present on system