libvisual: use gst_element_class_set_metadata when passing dynamic strings

gst_element_class_set_metadata is meant to only be used with static or inlined strings, which isn't the case for this element resulting in use-after-free later on.

https://gstreamer.freedesktop.org/documentation/gstreamer/gstelement.html?gi-language=c#gst_element_class_set_static_metadata

assigned to @gstreamer-merge-bot

mentioned in commit alatiera/gst-plugins-base@1b567af0

added 1 commit

• 1b567af0 - libvisual: use gst_element_class_set_metadata when passing dynamic strings

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added 1.14 1.16 Needs backport labels

removed 1.14 label

added 1.14 label

merged

changed milestone to %1.17.1

mentioned in commit tpm/gst-plugins-base@b0b7366a

added Backported into 1.16 label

Merge Request for backport into 1.16 branch: !828 (merged) (target milestone: 1.16.3)

mentioned in merge request !828 (merged)

mentioned in commit tpm/gst-plugins-base@baf5edc9

added Backported into 1.14 label and removed Needs backport label

Merge Request for backport into 1.14 branch: !871 (merged) (target milestone: None)

mentioned in merge request !871 (merged)