Fix crash on one permission refused and color black on black

app/src/main/java/fr/mobdev/peertubelive/activity/StreamActivity.kt

@@ -148,10 +148,12 @@ class StreamActivity : AppCompatActivity() {
             }
 
             override fun surfaceDestroyed(p0: SurfaceHolder) {
-                if(rtmpCamera1.isStreaming) {
-                    rtmpCamera1.stopStream()
+                if (this@StreamActivity::rtmpCamera1.isInitialized) {
+                    if (rtmpCamera1.isStreaming) {
+                        rtmpCamera1.stopStream()
+                    }
+                    rtmpCamera1.stopPreview()
                 }
-                rtmpCamera1.stopPreview()
 
             }
 

app/src/main/res/layout/stream.xml

@@ -16,6 +16,7 @@
                 android:layout_width="0dp"
                 android:layout_height="wrap_content"
                 android:id="@+id/permission_info"
+                android:textColor="@color/white"
                 android:text="@string/permissions"
                 app:layout_constraintTop_toTopOf="parent"
                 app:layout_constraintBottom_toBottomOf="parent"
@@ -33,7 +34,7 @@
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintEnd_toEndOf="parent"
                 android:gravity="center"
-                android:textColor="#0000FF"
+                android:textColor="@color/colorPrimary"
                 />
             <com.pedro.rtplibrary.view.OpenGlView
                 android:layout_width="0dp"