Older shells don't support unset.

diff --git a/plugins/sudoers/Makefile.in b/plugins/sudoers/Makefile.in
index 8d6ba530b8fc20c9fc5fe9016ca88ca38f6316ad..1b2ace888d5ccd520539f30ce677275f221ad57b 100644 (file)
--- a/plugins/sudoers/Makefile.in
+++ b/plugins/sudoers/Makefile.in
@@ -345,7 +345,7 @@ cppcheck:
 check: $(TEST_PROGS) visudo testsudoers
        @if test X"$(cross_compiling)" != X"yes"; then \
            LC_ALL=C; export LC_ALL; \
-           unset LANG; \
+           unset LANG || LANG=; \
            rval=0; \
            mkdir -p regress/parser; \
            ./check_addr $(srcdir)/regress/parser/check_addr.in || rval=`expr $$rval + $$?`; \