ui: use kotlin class instead of java class for tag

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

ui/src/main/java/com/wireguard/android/fragment/BaseFragment.kt

@@ -103,6 +103,6 @@ abstract class BaseFragment : Fragment(), OnSelectedTunnelChangedListener {
 
     companion object {
         private const val REQUEST_CODE_VPN_PERMISSION = 23491
-        private val TAG = "WireGuard/" + BaseFragment::class.java.simpleName
+        private val TAG = "WireGuard/${BaseFragment::class.simpleName!!}"
     }
 }

ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.kt

@@ -229,6 +229,6 @@ class TunnelEditorFragment : BaseFragment(), AppExclusionListener {
     companion object {
         private const val KEY_LOCAL_CONFIG = "local_config"
         private const val KEY_ORIGINAL_NAME = "original_name"
-        private val TAG = "WireGuard/" + TunnelEditorFragment::class.java.simpleName
+        private val TAG = "WireGuard/${TunnelEditorFragment::class.simpleName!!}"
     }
 }

ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt

@@ -397,6 +397,6 @@ class TunnelListFragment : BaseFragment() {
         const val REQUEST_IMPORT = 1
         private const val REQUEST_TARGET_FRAGMENT = 2
         private const val CHECKED_ITEMS = "CHECKED_ITEMS"
-        private val TAG = "WireGuard/" + TunnelListFragment::class.java.simpleName
+        private val TAG = "WireGuard/${TunnelListFragment::class.simpleName!!}"
     }
 }