Fix cli unload (-u) and add status check option (-c).

The findModule method in module.go requires a valid paClient to be
populated in the context object.
Added logging if unloadSupressor fails when called via the -u CLI flag.
Adding a check CLI flag gives more flexibility when implementing
scripts/CLI workflows.

main.go

@@ -49,6 +49,7 @@ func main() {
 	var loadOutput bool
 	var threshold int
 	var list bool
+	var check bool
 
 	flag.IntVar(&pulsepid, "removerlimit", -1, "for internal use only")
 	flag.BoolVar(&setcap, "setcap", false, "for internal use only")
@@ -58,6 +59,7 @@ func main() {
 	flag.BoolVar(&unload, "u", false, "Unload supressor")
 	flag.IntVar(&threshold, "t", -1, "Voice activation threshold")
 	flag.BoolVar(&list, "l", false, "List available PulseAudio devices")
+	flag.BoolVar(&check, "c", false, "Check supressor status")
 	flag.Parse()
 
 	if setcap {
@@ -107,6 +109,15 @@ func main() {
 		os.Exit(1)
 	}
 
+	ctx.paClient = paClient
+
+	if check {
+		if supressorState(&ctx) == loaded {
+			os.Exit(0)
+		}
+		os.Exit(1)
+	}
+
 	if list {
 		fmt.Println("Sources:")
 		sources := getSources(paClient)
@@ -133,12 +144,15 @@ func main() {
 	}
 
 	if unload {
-		unloadSupressor(&ctx)
+		err := unloadSupressor(&ctx)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Error unloading PulseAudio Module: %+v\n", err)
+			os.Exit(1)
+		}
 		os.Exit(0)
 	}
 
 	if loadInput {
-		ctx.paClient = paClient
 		sources := getSources(paClient)
 
 		if sinkName == "" {
@@ -165,7 +179,6 @@ func main() {
 
 	}
 	if loadOutput {
-		ctx.paClient = paClient
 		sinks := getSinks(paClient)
 
 		if sinkName == "" {