noInternet Activity crash fixed

app/src/main/java/com/github/libretube/MainActivity.kt

@@ -282,8 +282,13 @@ class MainActivity : AppCompatActivity() {
                 }
             }
         } catch (e: Exception) {
-            navController.popBackStack()
-            moveTaskToBack(true)
+            // try catch to prevent nointernet activity to crash
+            try {
+                navController.popBackStack()
+                moveTaskToBack(true)
+            } catch (e: Exception){
+                super.onBackPressed()
+            }
         }
     }
 

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

@@ -39,6 +39,7 @@
         android:layout_height="wrap_content"
         android:layout_marginTop="10dp"
         android:text="@string/retry"
+        android:textColor="?android:attr/colorBackground"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/noInternet_textView" />