Allow unresolved symbols in libzfs on FreeBSD

We use now use environ, which is part of the C runtime there

Signed-off-by: Ahelenia Ziemiańska <[email protected]>

Author: nabijaczleweli

lib/libzfs/Makefile.am

@@ -80,8 +80,10 @@ libzfs_la_LIBADD += -lm $(LIBCRYPTO_LIBS) $(ZLIB_LIBS) $(LTLIBINTL)
 libzfs_la_LDFLAGS = -pthread
 
 if !ASAN_ENABLED
+if !BUILD_FREEBSD
 libzfs_la_LDFLAGS += -Wl,-z,defs
 endif
+endif
 
 if BUILD_FREEBSD
 libzfs_la_LIBADD += -lutil -lgeom