libtsxx [FIX]: make namespace reference explicit

src/libs/libtsxx/wid2timeseries.h

@@ -46,11 +46,11 @@ namespace ts {
   // SFF version
     
   //! double precision data with SFF header
-  typedef TimeSeries<aff::Series<double>, sff::WID2> TDsfftimeseries;
+  typedef TimeSeries<aff::Series<double>, ::sff::WID2> TDsfftimeseries;
   //! single precision data with SFF header
-  typedef TimeSeries<aff::Series<float>, sff::WID2> TSsfftimeseries;
+  typedef TimeSeries<aff::Series<float>, ::sff::WID2> TSsfftimeseries;
   //! integer data with SFF header
-  typedef TimeSeries<aff::Series<int>, sff::WID2> TIsfftimeseries;
+  typedef TimeSeries<aff::Series<int>, ::sff::WID2> TIsfftimeseries;
 
 } // namespace ts