fix to prevent exceptions from bubbling up from gpx parser

InternalPythonModules/GPX_Module/GPX_Parser_Module.py

@@ -236,6 +236,7 @@ class GPXParserFileIngestModule(FileIngestModule):
                         Waypoint(point.latitude, point.longitude, point.elevation, point.name))
 
                 try:
+                    if not geoWaypoints.isEmpty():
                         geoArtifactHelper.addRoute(None, None, geoWaypoints, None)
                 except Blackboard.BlackboardException as e:
                     self.log("Error posting GPS route artifact for " + file.getUniquePath() +