examples/dmabuf-capture: add extra roundtrip for wl_output listener
This example was relying on wl_display_dispatch being enough to fetch
output information. This worked by chance.
Add an explicit wl_display_roundtrip.
Other examples don't setup wl_output listeners, so they should be fine.
Fixes: 297354f847
("Remove unnecessary wl_display_dispatch calls")
Closes: https://github.com/swaywm/wlroots/issues/2386
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@ -753,6 +753,10 @@ static int init(struct capture_context *ctx) {
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ctx->registry = wl_display_get_registry(ctx->display);
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wl_registry_add_listener(ctx->registry, ®istry_listener, ctx);
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// First roundtrip to fetch globals
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wl_display_roundtrip(ctx->display);
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// Second roundtrip to fetch wl_output information
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wl_display_roundtrip(ctx->display);
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if (!ctx->export_manager) {
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