Overzealous with the is not None stuff

match returns '[]' when there aren't any and that is 'falsey'
markwal · May 6, 2020 · 834948e · 834948e
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diff --git a/GPX b/GPX
diff --git a/octoprint_GPX/__init__.py b/octoprint_GPX/__init__.py
@@ -115,7 +115,7 @@ def serial_factory(self, comm, port, baudrate, timeout, *args, **kwargs):
 				try:
 					import glob
 					ports = glob.glob("/dev/serial/by-id/*MakerBot_Industries_The_Replicator*")
-					if ports is not None:
+					if ports:
 						port = os.path.normpath(os.path.join("/dev/serial/by-id/", os.readlink(ports[0])))
 				except:
 					# oh well, it was worth a try