Fix compile errors

app/src/debug/java/org/tasks/preferences/fragments/Debug.kt

@@ -4,7 +4,6 @@ import android.os.Bundle
 import androidx.annotation.StringRes
 import androidx.preference.Preference
 import at.bitfire.cert4android.CustomCertManager.Companion.resetCertificates
-import com.android.billingclient.api.BillingClient.SkuType
 import com.google.common.primitives.Ints
 import org.tasks.R
 import org.tasks.billing.BillingClient
@@ -49,7 +48,7 @@ class Debug : InjectingPreferenceFragment() {
         if (inventory.getPurchase(sku) == null) {
             preference.title = getString(R.string.debug_purchase, sku)
             preference.onPreferenceClickListener = Preference.OnPreferenceClickListener {
-                billingClient.initiatePurchaseFlow(activity, sku, SkuType.INAPP, null)
+                billingClient.initiatePurchaseFlow(activity, sku, "inapp" /*SkuType.INAPP*/, null)
                 false
             }
         } else {

app/src/release/java/org/tasks/preferences/fragments/Debug.kt

@@ -0,0 +1,13 @@
+package org.tasks.preferences.fragments
+
+import android.os.Bundle
+import org.tasks.injection.FragmentComponent
+import org.tasks.injection.InjectingPreferenceFragment
+
+class Debug : InjectingPreferenceFragment() {
+
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+    }
+
+    override fun inject(component: FragmentComponent) = component.inject(this)
+}