voip_calls_infO_model(.h): fix extra ‘;’ [-Wpedantic]

Change-Id: I2f131999cd0337d0d65d52f303c8ab9ca6bda39a
Reviewed-on: https://code.wireshark.org/review/20757
Reviewed-by: Peter Wu <peter@lekensteyn.nl>

ui/qt/voip_calls_info_model.h

@@ -71,7 +71,7 @@ private:
 
 class VoipCallsInfoSortedModel : public QSortFilterProxyModel
 {
-    Q_OBJECT;
+    Q_OBJECT
 
 public:
     VoipCallsInfoSortedModel(QObject *parent = 0);