fix label display with external tabs on some wins

ChangeLog

@@ -1,6 +1,9 @@
 (Format: Year/Month/Day)
 Changes for 0.9.16:
 *06/04/17:
+   * Fix display of label for dialog-type boxes (Simon)
+     (only when external tabs are enabled, but not for particular window)
+     FbWinFrame.cc
    * Fix fbrun position setting (-pos and -nearmouse args) (Simon)
      util/fbrun/... FbRun.hh/cc main.cc
    * Resize the clock if the text gets too big, sf.net patch #1436406

src/FbWinFrame.cc

@@ -1216,7 +1216,7 @@ void FbWinFrame::applyTitlebar() {
     m_titlebar.setAlpha(alpha);
     m_label.setAlpha(alpha);
 
-    if (externalTabMode()) {
+    if (m_tabmode != INTERNAL) {
         m_label.setGC(m_focused?theme().labelTextFocusGC():theme().labelTextUnfocusGC());
         m_label.setJustify(theme().justify());