Minor variations in getopt() output causing musl test failures.
https://bugs.gentoo.org/836575

--- a/check-error
+++ b/check-error
@@ -119,7 +119,7 @@
    echo "FAILED"
    exit 1
 fi
-grep 'ike-scan: unrecognized option ' $TMPFILE >/dev/null
+grep 'ike-scan: unrecognized option' $TMPFILE >/dev/null
 if test $? -ne 0; then
    rm -f $TMPFILE
    echo "FAILED"