GESTimelinePipeline: Fix minor bug in get_compatible_unlinked_pad
GESTimelinePipeline: Fix minor bug in get_compatible_unlinked_pad

We weren't breaking and ended up doing a fallthrough to the loop
completion.

cfoch/gst-editing-services,cfoch/ges,luisbg/gst-editing-services,pitivi/gst-editing-services,cfoch/gst-editing-services,volodymyrrudyi/gst-editing-services,pitivi/gst-editing-services,cfoch/gst-editing-services,volodymyrrudyi/gst-editing-services,cfoch/ges,freesteph/gst-editing-services,pitivi/gst-editing-services,volodymyrrudyi/gst-editing-services,MathieuDuponchelle/PitiviGes,MathieuDuponchelle/PitiviGes,freesteph/gst-editing-services,ahmedammar/platform_external_gst_editing_services,MathieuDuponchelle/PitiviGes,pitivi/gst-editing-services,cfoch/ges,freesteph/gst-editing-services,MathieuDuponchelle/PitiviGes,cfoch/ges,ahmedammar/platform_external_gst_editing_services,luisbg/gst-editing-services,cfoch/gst-editing-services