Enable encryption only when key available

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -5120,15 +5120,13 @@ public class FragmentCompose extends FragmentBase {
                                     EntityMessage.PGP_SIGNENCRYPT.equals(ref.ui_encrypt)) {
                                 if (Helper.isOpenKeychainInstalled(context) &&
                                         selected.sign_key != null &&
-                                        (EntityMessage.PGP_SIGNENCRYPT.equals(ref.ui_encrypt) ||
+                                        PgpHelper.hasPgpKey(context, recipients))
-                                                PgpHelper.hasPgpKey(context, recipients)))
                                     data.draft.ui_encrypt = ref.ui_encrypt;
                             } else if (EntityMessage.SMIME_SIGNONLY.equals(ref.ui_encrypt) ||
                                     EntityMessage.SMIME_SIGNENCRYPT.equals(ref.ui_encrypt)) {
                                 if (ActivityBilling.isPro(context) &&
                                         selected.sign_key_alias != null &&
-                                        (EntityMessage.SMIME_SIGNENCRYPT.equals(ref.ui_encrypt) ||
+                                        SmimeHelper.hasSmimeKey(context, recipients))
-                                                SmimeHelper.hasSmimeKey(context, recipients)))
                                     data.draft.ui_encrypt = ref.ui_encrypt;
                             }
                         }