Fix text property bug in gnus-group-list-active

* lisp/gnus/gnus-group.el (gnus-group-list-active): The property value
  should be the group name, not the value of gethash. Ie, it should be
  the key, not the value.
1 job for master in 51 minutes and 12 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #1127
test-all

00:51:12

 
Name Stage Failure
failed
test-all Test
make[2]: *** [check-doit] Error 1
Makefile:313: recipe for target 'check-doit' failed
make[2]: Leaving directory '/builds/emacs/emacs/test'
Makefile:288: recipe for target 'check-expensive' failed
make[1]: *** [check-expensive] Error 2
make[1]: Leaving directory '/builds/emacs/emacs/test'
make: *** [check-expensive] Error 2
Makefile:962: recipe for target 'check-expensive' failed
ERROR: Job failed: exit code 1