StanzaError: Remove optional getter/settters for type/condition

The whole QXmppStanza::Error is now used optionally in QXmppStanza, so
type and condition of the error don't need to be optionals as well.

Part of #512.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/omemo/QXmppOmemoManager_p.cpp b/src/omemo/QXmppOmemoManager_p.cpp
index 2de0b5f3..805f0b56 100644
--- a/src/omemo/QXmppOmemoManager_p.cpp
+++ b/src/omemo/QXmppOmemoManager_p.cpp
@@ -1374,9 +1374,8 @@ QByteArray ManagerPrivate::createSceEnvelope(const T &stanza)
         } else {
             // If the IQ stanza contains an error (i.e., it is an error response), that error is
             // serialized instead of actual content.
-            const auto error = stanza.error();
-            if (error.typeOpt()) {
-                error.toXml(&writer);
+            if (auto err = stanza.errorOptional()) {
+                err->toXml(&writer);
             } else {
                 stanza.toXmlElementFromChild(&writer);
             }