Avoid a race condition that causes the build to fail on Jenkins with:
asn1p_y.y: In function 'asn1p_parse':
asn1p_y.y:357:13: error: 'param' undeclared (first use in this function)
*(void **)param = $1;
^~~~~
Change-Id: Ib853a93bffc4cd78d4f08624fb1e56772ce68ce5