Fetch justifation of formfield from parent

DEVSIX-1909

Author: pavel-alay

forms/src/main/java/com/itextpdf/forms/fields/PdfFormField.java

@@ -1532,7 +1532,11 @@ public PdfFormField setDefaultAppearance(String defaultAppearance) {
      * @return the current justification attribute
      */
     public Integer getJustification() {
-        return getPdfObject().getAsInt(PdfName.Q);
+        Integer justification = getPdfObject().getAsInt(PdfName.Q);
+        if (justification == null && getParent() != null) {
+            justification = getParent().getAsInt(PdfName.Q);
+        }
+        return justification;
     }
 
     /**