fix test

Author: axherrm

src/main/java/org/jadice/filetype/matchers/PDFMatcher.java

@@ -89,10 +89,8 @@ public class PDFMatcher extends Matcher {
   public static final String TEXT_LANGUAGE_CONFIDENCE_VALUES = "text-language-confidence-values";
 
 
-  private final static boolean languageCheck;
-
-  static {
-    languageCheck = "true".equalsIgnoreCase(System.getProperty(PDFMatcher.class.getName() + ".languageCheck", "false"));
+  private static boolean checkLanguage() {
+    return "true".equalsIgnoreCase(System.getProperty(PDFMatcher.class.getName() + ".languageCheck", "false"));
   }
 
   private static boolean lookForText() {
@@ -297,7 +295,7 @@ private static void addTextInfo(final Map<String, Object> pdfDetails, final PDDo
       final String pdfText = new PDFTextStripper().getText(doc);
       pdfDetails.put(TEXT_LENGTH_PER_PAGE_KEY, textLengthPerPages);
       pdfDetails.put(TEXT_LENGTH_KEY, pdfText.replaceAll("([\\r\\n])", "").length());
-      if (languageCheck)
+      if (checkLanguage())
         addLanguageInformation(pdfDetails, pdfText);
     }
   }