Tags 993699 +patch thanks I was able to grab the upstream fix and apply it to the libxtrx package. I also had to tweak the packaging itself to refer to soapysdr 0.8 instead of 0.7. Note that this involved a package rename, so would have to go through new if uploaded to Debian.
I have uploaded the fixed package to raspbian, a debdiff can be found at https://debdiffs.raspbian.org/main/libx/libxtrx/libxtrx_0.0.1%2Bgit20191219.98458ce-1%2Brpi1.debdiff No intent to NMU in Debian.