meson: no longer pass -Wl,--no-undefined explicitly

to make it possible to build dbus-broker with clang and ASan/UBsan
on OSS-Fuzz (google/oss-fuzz#7860) without
sed scripts.

-Wl,--no-undefined is still passed by meson by default unless -Db_lundef
is set to false explictily.

mesonbuild/meson#764

Signed-off-by: Evgeny Vereshchagin <evvers@ya.ru>

src/meson.build

@@ -20,7 +20,6 @@ libcrbtree_both = both_libraries(
         dependencies: libcrbtree_deps,
         install: not meson.is_subproject(),
         link_args: [
-                '-Wl,--no-undefined',
                 '-Wl,--version-script=@0@'.format(libcrbtree_symfile),
         ],
         link_depends: libcrbtree_symfile,