remove trailing whitespace

main/sdr.go

@@ -418,10 +418,10 @@ func configDevices(count int, es_enabled, uat_enabled bool) {
 
 // chicken and egg - to gracefully shut down a read method we
 // check a channel for a close flag, but now we want to handle
-// catastrophic dongle failures (when ReadSync returns an error 
-// or we get stderr ouput) but we can't just bypass the channel 
-// check and return directly from a goroutine because the close 
-// channel call in the shutdown method will cause a runtime panic, 
+// catastrophic dongle failures (when ReadSync returns an error
+// or we get stderr ouput) but we can't just bypass the channel
+// check and return directly from a goroutine because the close
+// channel call in the shutdown method will cause a runtime panic,
 // hence these...
 var shutdownES bool
 var shutdownUAT bool