devel/talloc: fix build with lld 17

Building devel/talloc with lld 17 results in the following link error:

  08:58:52 runner ['cc', '-Wl,--version-script=/wrkdirs/usr/ports/devel/talloc/work/talloc-2.3.4/bin/default/talloc.vscript', '-shared', '-Wl,-h,libtalloc.so.2', 'talloc.c.6.o', 'lib/replace/replace.c.2.o', 'lib/replace/strptime.c.2.o', 'lib/replace/xattr.c.2.o', '-o/wrkdirs/usr/ports/devel/talloc/work/talloc-2.3.4/bin/default/libtalloc.so', '-Wl,-Bstatic', '-Wl,-Bdynamic', '-fstack-protector-strong', '-Wl,-no-undefined']
  ld: error: version script assignment of 'local' to symbol '_end' failed: symbol not defined
  ld: error: version script assignment of 'local' to symbol '__bss_start' failed: symbol not defined
  ld: error: version script assignment of 'local' to symbol '_edata' failed: symbol not defined
  cc: error: linker command failed with exit code 1 (use -v to see invocation)
  script file to fix the error.

Since the linker version scripts are generated dynamically, suppress
errors with lld >= 17 due to these undefined symbols.

PR:		274000
Approved by:	maintainer timeout (2 weeks)
MFH:		2023Q4

devel/talloc/Makefile

@@ -50,6 +50,10 @@ CFLAGS+=			${CFLAGS_${CHOSEN_COMPILER_TYPE}}
 CFLAGS_clang=			-fno-color-diagnostics
 CONFIGURE_ENV+=			NOCOLOR=yes
 MAKE_ENV+=			NOCOLOR=yes
+# Some symbols in talloc's linker version scripts are not defined, but since the
+# scripts are generated dynamically, suppress errors with lld >= 17 due to these
+# undefined symbols.
+LDFLAGS+=			-Wl,--undefined-version
 
 post-patch:
 				@${REINPLACE_CMD} -e 's|%%PKGCONFIGDIR%%|${PKGCONFIGDIR}|g' \