Bug 494098

SUMMARY
Spectacle segfaults on NVK when the env var NOUVEAU_USE_ZINK=1 is set

STEPS TO REPRODUCE
1. set NOUVEAU_USE_ZINK=1
2. launch spectacle

OBSERVED RESULT
Pops up a window for a bit, then segfaults

EXPECTED RESULT
Spectacle works as on any GPU

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.3
Kernel Version: 6.12.0-rc1-1-mainline (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 7600 6-Core Processor
Memory: 30.9 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 3070
Mesa version: Mesa git built on commit 065b45e4dcd

ADDITIONAL INFORMATION
backtrace:
```
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00007fcdfd43bd98 in vl_codec_supported (screen=screen@entry=0x7fcdbc00e000, profile=profile@entry=PIPE_VIDEO_PROFILE_MPEG4_AVC_BASELINE, encode=encode@entry=true) at ../mesa/src/gallium/auxiliary/vl/vl_codec.c:74
#2  0x00007fcdfce2606a in vlVaGetConfigAttributes (ctx=<optimized out>, profile=VAProfileH264ConstrainedBaseline, entrypoint=VAEntrypointEncSlice, attrib_list=<optimized out>, num_attribs=<optimized out>) at ../mesa/src/gallium/frontends/va/config.c:261
#3  0x00007fce1471f30c in vaGetConfigAttributes () from /usr/lib/libva.so.2
#4  0x00007fce1a3f4426 in VaapiUtils::rateControlForProfile(VAProfile, VAEntrypoint, void*, QByteArray const&) () from /usr/lib/libKPipeWire.so.6
#5  0x00007fce1a3f44da in VaapiUtils::supportsProfile(VAProfile, void*, QByteArray const&) () from /usr/lib/libKPipeWire.so.6
#6  0x00007fce1a3f4798 in VaapiUtils::supportsH264(QByteArray const&) const () from /usr/lib/libKPipeWire.so.6
#7  0x00007fce1a3f4915 in VaapiUtils::VaapiUtils(VaapiUtils::Private) () from /usr/lib/libKPipeWire.so.6
#8  0x00007fce1a3f4ad8 in VaapiUtils::instance() () from /usr/lib/libKPipeWire.so.6
#9  0x00007fce1f02c45f in PipeWireBaseEncodedStream::suggestedEncoders() const () from /usr/lib/libKPipeWireRecord.so.6
#10 0x00007fce1f02cbec in PipeWireBaseEncodedStream::PipeWireBaseEncodedStream(QObject*) () from /usr/lib/libKPipeWireRecord.so.6
#11 0x00007fce1f02fe36 in PipeWireRecord::PipeWireRecord(QObject*) () from /usr/lib/libKPipeWireRecord.so.6
#12 0x000055f3ce726311 in ?? ()
#13 0x000055f3ce72a26b in ?? ()
#14 0x00007fce19acbc65 in ?? () from /usr/lib/libQt6Core.so.6
#15 0x00007fce19ac53f7 in ?? () from /usr/lib/libQt6Core.so.6
#16 0x00007fce192a339d in ?? () from /usr/lib/libc.so.6
#17 0x00007fce1932849c in ?? () from /usr/lib/libc.so.6
```