modify comment, update gitignore file

.gitignore

@@ -1,4 +1,5 @@
 .idea/
+.vscode/
 dump978/extract_nexrad
 dump978/uat2esnt
 dump978/uat2json

main/sdr.go

@@ -416,13 +416,12 @@ 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,
-// hence these...
+// 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, hence these...
 var shutdownES bool
 var shutdownUAT bool