Fix issue where config profile switches did not change the tether set…

…ting when manually tethered (#7919)

source/braille.py

@@ -3,7 +3,7 @@
 #A part of NonVisual Desktop Access (NVDA)
 #This file is covered by the GNU General Public License.
 #See the file COPYING for more details.
-#Copyright (C) 2008-2017 NV Access Limited, Joseph Lee, Babbage B.V., Davy Kager, Bram Duvigneau
+#Copyright (C) 2008-2018 NV Access Limited, Joseph Lee, Babbage B.V., Davy Kager, Bram Duvigneau
 
 import sys
 import itertools
@@ -1845,6 +1845,7 @@ def handleConfigProfileSwitch(self):
 		display = config.conf["braille"]["display"]
 		if display != self.display.name:
 			self.setDisplayByName(display)
+		self._tether = config.conf["braille"]["tetherTo"]
 
 class _BgThread:
 	"""A singleton background thread used for background writes and raw braille display I/O.