Issue #330: protection against adding the same multiple cyrillic characters doesn't work

trunk/src/com/jpexs/decompiler/flash/gui/GraphFrame.java

@@ -303,7 +303,6 @@ public class GraphFrame extends AppFrame {
     }
 
     private void setVisibleSize(Dimension dim) {
-       
         setSize(new Dimension(dim.width + frameWidthDiff, dim.height + frameHeightDiff));
     }
 

trunk/src/com/jpexs/decompiler/flash/gui/MainFrame.java

@@ -2192,6 +2192,7 @@ public class MainFrame extends AppRibbonFrame implements ActionListener, TreeSel
                         char c = newchars.charAt(i);
                         if (oldchars.indexOf((int) c) == -1) {
                             f.addCharacter(swf.tags, c, fontSelection.getSelectedItem().toString());
+                            oldchars += c;
                         }
                     }
                     fontAddCharactersField.setText("");