Fix substitutions null
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@ -908,7 +908,6 @@ class FormMail extends Form
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$defaultmessage=preg_replace("/^(<br>)+/","",$defaultmessage);
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$defaultmessage=preg_replace("/^\n+/","",$defaultmessage);
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}
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$out.= '<tr>';
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$out.= '<td valign="top">'.$langs->trans("MailText").'</td>';
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$out.= '<td>';
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@ -5733,6 +5733,8 @@ function make_substitutions($text, $substitutionarray, $outputlangs=null)
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// Make substitition for array $substitutionarray
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foreach ($substitutionarray as $key => $value)
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{
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if (! isset($value)) continue; // If value is null, it same than not having substitution key at all into array, we do not replace.
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if ($key == '__SIGNATURE__' && (! empty($conf->global->MAIN_MAIL_DO_NOT_USE_SIGN))) $value=''; // Protection
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if ($key == '__USER_SIGNATURE__' && (! empty($conf->global->MAIN_MAIL_DO_NOT_USE_SIGN))) $value=''; // Protection
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