fix lupdate warning. (#617)

With Qt 5.12.9 the lupdate command in package_app could print a warning:
/home/strabert/work/pkgconfig/gui/preferences.cc:28: Discarding unconsumed meta data

diff --git a/gui/preferences.cc b/gui/preferences.cc
index fbed65695a56844669b0274464f9508102c82d85..2515e50766731b970dc13cd4ea5fae6f2292d033 100644 (file)
--- a/gui/preferences.cc
+++ b/gui/preferences.cc
@@ -23,7 +23,7 @@
 class FormatListEntry : public QListWidgetItem
 {
 public:
-  FormatListEntry(Format& fmt) /*: fmt_(fmt)*/
+  FormatListEntry(Format& fmt) /* : fmt_(fmt) */
   {
     setText(fmt.getDescription());
     bool enabled = !fmt.isHidden();