Revert "change reference count of gjs gdbuswrapper"
Revert "change reference count of gjs gdbuswrapper"

This reverts commit 81e9718dc079db3a58ca8cd896e35339769260dc.

This calls one too many unrefs for cjs (reason unknown), resulting
in segfaults and warnings.

mtwebster/cjs,mtwebster/cjs,mtwebster/cjs,mtwebster/cjs,mtwebster/cjs