Merge pull request #1895 from phl0/fixLotwPhp81

Fix LotW issues with PHP 8

application/controllers/Lotw.php

@@ -910,7 +910,9 @@ class Lotw extends CI_Controller {
 
 
 		if(openssl_sign($qso_string, $signature, $pkeyid, OPENSSL_ALGO_SHA1)) {
-		  openssl_free_key($pkeyid);
+		  if (defined('PHP_MAJOR_VERSION') && PHP_MAJOR_VERSION < 8) {
+		    openssl_free_key($pkeyid);
+		  }
 		  $signature_b64 = base64_encode($signature);
 		  return $signature_b64;
 		}

application/views/lotw_views/adif_views/adif_export.php

@@ -42,7 +42,7 @@ $cert2 = str_replace("-----END CERTIFICATE-----", "", $cert1);
 
 <BAND:<?php echo strlen($qso->COL_BAND); ?>><?php echo strtoupper($qso->COL_BAND); ?>
 
-<MODE:<?php echo strlen($CI->mode_map($qso->COL_MODE, $qso->COL_SUBMODE)); ?>><?php echo strtoupper($CI->mode_map(strtoupper($qso->COL_MODE), strtoupper($qso->COL_SUBMODE))); ?>
+<MODE:<?php echo strlen($CI->mode_map($qso->COL_MODE, $qso->COL_SUBMODE)); ?>><?php echo strtoupper($CI->mode_map(($qso->COL_MODE == null ? '' : strtoupper($qso->COL_MODE)), ($qso->COL_SUBMODE == null ? '' : strtoupper($qso->COL_SUBMODE)))); ?>
 
 <?php if($qso->COL_FREQ != "" || $qso->COL_FREQ != "0") { ?><?php $freq_in_mhz = $qso->COL_FREQ / 1000000; ?><FREQ:<?php echo strlen($freq_in_mhz); ?>><?php echo $freq_in_mhz; ?><?php } ?>