[MacPorts] #69428: mariadb*: fails to build with libxml2 2.12.x

[MacPorts]

#69428: mariadb*: fails to build with libxml2 2.12.x
-------------------------------------------------+-------------------------
  Reporter:  amstilp                             |      Owner:  michaelld
      Type:  defect                              |     Status:  assigned
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:
      Port:  mariadb mariadb-10.0 mariadb-10.1   |
  mariadb-10.2 mariadb-10.3 mariadb-10.4         |
  mariadb-10.5 mariadb-10.6 mariadb-10.7         |
  mariadb-10.8 mariadb-10.9 mariadb-10.10        |
  mariadb-10.11                                  |
-------------------------------------------------+-------------------------

Comment (by jmroot):

 So that's 10.11 updated, which is the latest LTS version we have in
 MacPorts. I might get to the others at some point, but no promises. Please
 feel more than welcome to beat me to it.

 Michael, if there are any issues introduced by the update, please let me
 know.

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Ticket URL: <https://trac.macports.org/ticket/69428#comment:20>
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