[osm] don't bother with the R-tree check if there are no name:* tags in border data set

scripts/geodata/osm/osm_address_training_data.py

@@ -581,6 +581,9 @@ def build_toponym_training_data(language_rtree, infile, out_dir):
     writer = csv.writer(f, 'tsv_no_quote')
 
     for key, value in parse_osm(infile):
+        if not sum((1 for k, v in value.iteritems() if k.startswith('name:'))) > 0:
+            continue
+
         try:
             latitude, longitude = latlon_to_floats(value['lat'], value['lon'])
         except Exception: