Update Converter.java

module/src/main/java/pl/clarin/any2txt/Converter.java

@@ -37,7 +37,7 @@ public class Converter extends Worker {
     public void init() throws Exception {
     }
 
-    private int maxLength = (1000 * 1024 * 1024);
+    private static int maxLength = (1000 * 1024 * 1024);
 
     //init objects shared by threads
     @Override