fix SeedDMS_Core_File::fileExtension()

SeedDMS_Core/Core/inc.FileUtils.php

@@ -137,7 +137,7 @@ class SeedDMS_Core_File {
 		case "image/png":
 		case "image/gif":
 		case "image/jpg":
-			$expect = substr($this->_mimeType, -3, 3);
+			$expect = substr($mimetype, -3, 3);
 			break;
 		default:
 			$mime_map = [

SeedDMS_Core/package.xml

@@ -25,6 +25,7 @@
  <license uri="http://opensource.org/licenses/gpl-license">GPL License</license>
  <notes>
 - fix SeedDMS_Core_User::getDocumentContents()
+- fix SeedDMS_Core_File::fileExtension()
  </notes>
  <contents>
   <dir baseinstalldir="SeedDMS" name="/">