fix bug that call combine_data for RT130's soh_data because it make logIdx disappeared

sohstationviewer/model/general_data/general_data.py

@@ -367,12 +367,8 @@ class GeneralData():
         for key in self.keys:
             combine_data(key, self.waveform_data, self.gap_minimum)
             combine_data(key, self.mass_pos_data, self.gap_minimum)
-            try:
+            if self.__class__.__name__ == "MSeed":
                 combine_data(key, self.soh_data, self.gap_minimum)
-            except KeyError:
-                # Reftek's SOH trace doesn't have startTmEpoch and
-                # actually soh_data consists of only one trace
-                pass
 
     def retrieve_gaps_from_data_dicts(self):
         """