Bug#961811: baresip FTBFS with make 4.3

[Adrian Bunk]

Source: baresip
Version: 0.6.1-1
Severity: serious
Tags: ftbfs bullseye sid

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

...
modules/bv32/bv32.c:9:10: fatal error: bv32/bv32.h: No such file or directory
    9 | #include <bv32/bv32.h>
      |          ^~~~~~~~~~~~~
compilation terminated.
make[2]: *** [mk/mod.mk:44: build-x86_64/modules/bv32/bv32.o] Error 1