Fixed ResourceWarning from unclosed test files.
Fixed ResourceWarning from unclosed test files.

When running Django tests with Python warnings enabled.
EmadMokhtar/Django,kaedroho/django,theo-l/django,wkschwartz/django,rsalmaso/django,blighj/django,simonw/django,simonw/django,takis/django,solarissmoke/django,georgemarshall/django,wkschwartz/django,felixxm/django,felixxm/django,felixxm/django,pauloxnet/django,monetate/django,georgemarshall/django,claudep/django,frankvdp/django,EmadMokhtar/Django,charettes/django,claudep/django,atul-bhouraskar/django,schinckel/django,fenginx/django,wkschwartz/django,shaib/django,solarissmoke/django,django/django,rsalmaso/django,auvipy/django,auvipy/django,solarissmoke/django,atul-bhouraskar/django,claudep/django,felixxm/django,solarissmoke/django,ghickman/django,theo-l/django,charettes/django,apollo13/django,claudep/django,fenginx/django,elena/django,simonw/django,freakboy3742/django,simonw/django,fenginx/django,django/django,elena/django,apollo13/django,koordinates/django,googleinterns/django,monetate/django,dsanders11/django,MarkusH/django,monetate/django,django/django,schinckel/django,charettes/django,pauloxnet/django,ghickman/django,schinckel/django,koordinates/django,freakboy3742/django,shaib/django,rsalmaso/django,elena/django,atul-bhouraskar/django,adamchainz/django,timgraham/django,pauloxnet/django,manhhomienbienthuy/django,wkschwartz/django,timgraham/django,takis/django,EmadMokhtar/Django,adamchainz/django,apollo13/django,fenginx/django,koordinates/django,googleinterns/django,theo-l/django,googleinterns/django,monetate/django,ghickman/django,manhhomienbienthuy/django,kaedroho/django,kaedroho/django,timgraham/django,dsanders11/django,auvipy/django,adamchainz/django,theo-l/django,MarkusH/django,blighj/django,blighj/django,MarkusH/django,georgemarshall/django,georgemarshall/django,googleinterns/django,shaib/django,adamchainz/django,takis/django,takis/django,frankvdp/django,auvipy/django,blighj/django,freakboy3742/django,manhhomienbienthuy/django,ghickman/django,elena/django,dsanders11/django,schinckel/django,manhhomienbienthuy/django,charettes/django,MarkusH/django,apollo13/django,atul-bhouraskar/django,pauloxnet/django,rsalmaso/django,shaib/django,koordinates/django,frankvdp/django,django/django,timgraham/django,frankvdp/django,dsanders11/django