Only set a temp-dir session name _if_ temp-dir session was created

Also, minor log improvement to op-test.sh

Signed-off-by: Richard T Bonhomme <tincantech@protonmail.com>

easyrsa3/easyrsa

@@ -384,8 +384,8 @@ Non-existant temporary directory: $EASYRSA_TEMP_DIR"
 		rand="$("$EASYRSA_OPENSSL" rand -hex 4)" \
 			|| die "secure_session - rand '$rand'"
 
+		mkdir "${EASYRSA_TEMP_DIR}/${rand}" || continue
 		EASYRSA_TEMP_DIR_session="${EASYRSA_TEMP_DIR}/${rand}"
-		mkdir "$EASYRSA_TEMP_DIR_session" || continue
 		return
 	done
 	return 1

op-test.sh

@@ -225,6 +225,7 @@ download_shellcheck () {
 				log "version check failed: ${ERSA_UT}/${target_file}"
 			sc_bin="${ERSA_UT}/${target_file}"
 			sc_bin_ok=1
+			log "shellcheck enabled"
 		else
 			# download and basic check
 			log "curl_it ${target_file}"