[Dolibarr/dolibarr] f6eba3: fix CATEGORY_ADD_DESC_INTO_DOC

[Frédéric FRANCE]

  Branch: refs/heads/11.0
  Home:   https://github.com/Dolibarr/dolibarr
  Commit: f6eba3657505539fcab6f026effb23b7935c85d2
      
https://github.com/Dolibarr/dolibarr/commit/f6eba3657505539fcab6f026effb23b7935c85d2
  Author: Frédéric FRANCE <address@hidden>
  Date:   2020-02-21 (Fri, 21 Feb 2020)

  Changed paths:
    M htdocs/core/lib/pdf.lib.php

  Log Message:
  -----------
  fix CATEGORY_ADD_DESC_INTO_DOC

$cate->add_category doesn't exists


  Commit: 327b827fb45e6a693b3cc208d1fc1f0e0c9bda7a
      
https://github.com/Dolibarr/dolibarr/commit/327b827fb45e6a693b3cc208d1fc1f0e0c9bda7a
  Author: Frédéric FRANCE <address@hidden>
  Date:   2020-02-21 (Fri, 21 Feb 2020)

  Changed paths:
    M htdocs/projet/element.php

  Log Message:
  -----------
  avoid warning if not an array

Conflicts:
        htdocs/projet/element.php


Compare: 
https://github.com/Dolibarr/dolibarr/compare/60f394a53c33...327b827fb45e