L2SS_497: Mention hint before the code its relevant to, not after

tangostationcontrol/tangostationcontrol/common/measures.py

@@ -86,9 +86,9 @@ def restart_python():
         This function does not return. """
 
     exe_path = pathlib.Path(sys.executable)
-    os.execv(exe_path, [exe_path.name] + sys.argv)
 
     # NOTE: Python 3.4+ closes all file descriptors > 2 automatically, see https://www.python.org/dev/peps/pep-0446/
+    os.execv(exe_path, [exe_path.name] + sys.argv)
 
 def get_available_measures_directories() -> list:
     """ Returns the set of installed measures tables. """