ui: hide corrupted message if no installer

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

ui/src/main/java/com/wireguard/android/updater/Updater.kt

@@ -383,6 +383,7 @@ object Updater {
                 context.packageManager.getPackageInfo(context.packageName, PackageManager.PackageInfoFlags.of(PackageManager.GET_PERMISSIONS.toLong()))
             }.requestedPermissions.contains(Manifest.permission.REQUEST_INSTALL_PACKAGES)
         ) {
+            if (installer(context).isNotEmpty()) {
                 updaterScope.launch {
                     val update = try {
                         checkForUpdates()
@@ -391,6 +392,7 @@ object Updater {
                     }
                     emitProgress(Progress.Corrupt(update?.fileName))
                 }
+            }
             return
         }