multimedia/handbrake: disable ldconfig during build

ld-elf.so.1: Shared object "liblz4.so.1" not found, required by "libarchive.so.13"
gmake[4]: *** [common/CMakeFiles/common.dir/build.make:134: common/CMakeFiles/common.dir/x86/intrapred8.asm.o] Error 1

$ ldconfig -r
/var/run/ld-elf.so.hints:
        search directories:

PR:		259080
Reported by:	antoine (via exp-run)
Regressed by:	https://github.com/mesonbuild/meson/commit/2c3a68bc30cf