ges: launcher: fix compiler warning with MSVC 2022
tools/ges-launcher.c(315): warning C4133: 'function': incompatible types - from 'GESTrackType *' to 'guint *'
cl: Command line warning D9025: overriding '/DG_LOG_DOMAIN="GES"' with '/UG_LOG_DOMAIN'
This is from https://gitlab.freedesktop.org/tpm/cerbero/-/jobs/48764550 (not sure why the cast warning doesn't always show up)
Edited by Tim-Philipp Müller