Quit if there was an initializaton error

Let's close properly without segfaults :)

gui/qml/main.qml

@@ -20,12 +20,14 @@ ApplicationWindow {
                 donate.visible = true
             }
             if (ctx.errors ) {
-               // TODO consider disabling on/off buttons, or quit after closing the dialog
                if ( ctx.errors  == "nohelpers" ) {
                    showInitFailure(qsTr("Could not find helpers. Check your installation"))
                } else if ( ctx.errors == "nopolkit" ) {
                    showInitFailure(qsTr("Could not find polkit agent."))
                } else {
+                   //: %1 -> application name
+                   //: %2 -> error string
+                   showInitFailure(qsTr("Got an error starting %1: %2").arg(ctx.appName).arg(ctx.errors))
                    console.debug(ctx.errors)
                }
             }
@@ -248,5 +250,7 @@ ApplicationWindow {
         title: qsTr("Initialization Error")
         text: ""
         visible: false
+    	onAccepted: backend.quit()
+    	onRejected: backend.quit()
     }
 }

pkg/backend/api.go

@@ -4,7 +4,6 @@ package backend
 
 import (
 	"C"
-	"fmt"
 	"log"
 	"strconv"
 	"unsafe"
@@ -31,7 +30,9 @@ func Quit() {
 	} else {
 		ctx.cfg.SetUserStoppedVPN(true)
 	}
-	ctx.bm.Close()
+	if ctx.bm != nil {
+		ctx.bm.Close()
+	}
 }
 
 func DonateAccepted() {
@@ -55,7 +56,9 @@ func InitializeBitmaskContext(opts *InitOpts) {
 
 	initOnce.Do(func() { initializeContext(opts) })
 	runDonationReminder()
-	go ctx.updateStatus()
+	if ctx.bm != nil {
+		go ctx.updateStatus()
+	}
 }
 
 func RefreshContext() *C.char {

pkg/backend/init.go

@@ -45,6 +45,7 @@ func initializeBitmask(errCh chan string, opts *InitOpts) {
 		os.Exit(1)
 	}
 	bitmask.InitializeLogger()
+	ctx.cfg = config.ParseConfig()
 
 	b, err := bitmask.InitializeBitmask(opts.SkipLaunch)
 	if err != nil {
@@ -70,5 +71,4 @@ func initializeBitmask(errCh chan string, opts *InitOpts) {
 	}
 
 	ctx.bm = b
-	ctx.cfg = config.ParseConfig()
 }

pkg/vpn/launcher_linux.go

@@ -230,7 +230,8 @@ func bitmaskRootPath() (string, error) {
 			return path, nil
 		}
 	}
-	return "", errors.New("No bitmask-root found")
+	log.Println("Can't find bitmask-root")
+	return "", errors.New("nohelpers")
 }
 
 func getOpenvpnPath() string {