drm/meson: Fix refcount bugs in mesonvpuhasavailableconnectors()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.256 by commit fc1fc2abfcb9235d0ece9a4d858426fb617cfa66, it was introduced in version v4.10 by commit bbbe775ec5b5dace43a35886da9924837da09ddd. For more details please see the references link.