Fixed GISFunctionsTests.test_asgeojson() crash on MariaDB 10.2+.
Fixed GISFunctionsTests.test_asgeojson() crash on MariaDB 10.2+.

rsalmaso/django,dsanders11/django,theo-l/django,felixxm/django,apollo13/django,googleinterns/django,dsanders11/django,blighj/django,auvipy/django,manhhomienbienthuy/django,schinckel/django,wkschwartz/django,claudep/django,ghickman/django,felixxm/django,blighj/django,schinckel/django,georgemarshall/django,monetate/django,schinckel/django,manhhomienbienthuy/django,monetate/django,ghickman/django,adamchainz/django,koordinates/django,MarkusH/django,wkschwartz/django,rsalmaso/django,elena/django,freakboy3742/django,freakboy3742/django,theo-l/django,django/django,rsalmaso/django,dsanders11/django,atul-bhouraskar/django,claudep/django,pauloxnet/django,apollo13/django,kaedroho/django,django/django,simonw/django,solarissmoke/django,solarissmoke/django,blighj/django,MarkusH/django,kaedroho/django,atul-bhouraskar/django,rsalmaso/django,takis/django,ghickman/django,adamchainz/django,ghickman/django,wkschwartz/django,googleinterns/django,django/django,monetate/django,auvipy/django,solarissmoke/django,solarissmoke/django,simonw/django,shaib/django,pauloxnet/django,koordinates/django,shaib/django,georgemarshall/django,schinckel/django,atul-bhouraskar/django,koordinates/django,django/django,claudep/django,googleinterns/django,theo-l/django,manhhomienbienthuy/django,georgemarshall/django,shaib/django,auvipy/django,blighj/django,takis/django,MarkusH/django,takis/django,dsanders11/django,simonw/django,adamchainz/django,koordinates/django,elena/django,auvipy/django,shaib/django,manhhomienbienthuy/django,wkschwartz/django,theo-l/django,kaedroho/django,monetate/django,googleinterns/django,felixxm/django,takis/django,elena/django,MarkusH/django,apollo13/django,freakboy3742/django,elena/django,pauloxnet/django,claudep/django,adamchainz/django,apollo13/django,pauloxnet/django,felixxm/django,georgemarshall/django,atul-bhouraskar/django,simonw/django