Fix problem with detecting data type

We are currently skipping waveform files by inspecting the name of the
file. However, for some Centaur and Pegasus data sets whose station name
match a pattern used to filter waveform files, all their files are
skipped. We fix this problem by moving the check for waveform files.

sohstationviewer/controller/processing.py

@@ -268,10 +268,6 @@ def get_data_type_from_file(
                             'VP', 'VL', 'VL', 'VH',
                             'UN', 'UP', 'UL', 'UH']
 
-    if any(x in path2file.name for x in wf_chan_posibilities):
-        # Skip checking waveform files which aren't signature channels
-        return None, False
-
     file = open(path2file, 'rb')
     chans_in_stream = set()
     data_type = None
@@ -290,6 +286,9 @@ def get_data_type_from_file(
             return
 
         chan = record.record_metadata.channel
+        if any([wf_pattern in chan for wf_pattern in wf_chan_posibilities]):
+            # Skip checking waveform files which aren't signature channels
+            return None, False
         if is_multiplex is None:
             chans_in_stream.add(chan)
             if len(chans_in_stream) > 1: