Bug#960257: gsequencer FTBFS with lv2-dev 1.18.0-1

[Adrian Bunk <bunk@debian.org>]

Source: gsequencer
Version: 3.2.13-1
Severity: serious
Tags: ftbfs

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/gsequencer.html

...
ags/X/machine/ags_live_lv2_bridge.c: In function 'ags_live_lv2_bridge_lv2ui_idle_timeout':
ags/X/machine/ags_live_lv2_bridge.c:2001:81: error: dereferencing pointer to incomplete type 'struct _LV2UI_Idle_Interface'
 2001 |       retval = ((struct _LV2UI_Idle_Interface *) lv2ui_plugin->feature[0]->data)->idle(live_lv2_bridge->ui_handle[0]);
      |                                                                                 ^~
make[3]: *** [Makefile:18911: ags/X/machine/libgsequencer_la-ags_live_lv2_bridge.lo] Error 1