fix privacy friend verification updates

server/store/privacy_test.go

@@ -0,0 +1,14 @@
+package store
+
+import (
+	"testing"
+
+	"github.com/tinode/chat/server/store/types"
+)
+
+func TestValidUserPrivacyPatchAcceptsFriendVerificationOnly(t *testing.T) {
+	disabled := false
+	if !validUserPrivacyPatch(types.UserPrivacyPatch{FriendRequestVerification: &disabled}) {
+		t.Fatal("friend_request_verification should be a valid standalone privacy patch")
+	}
+}