fix(app): test correctly valid sip addresses at many points

src/app/cli/Cli.cpp

@@ -53,7 +53,7 @@ static void cliInitiateConference (QHash<QString, QString> &args) {
   // Check identity.
   {
     shared_ptr<linphone::Address> address = core->interpretUrl(::Utils::appStringToCoreString(args["sip-address"]));
-    if (!address) {
+    if (!address || address->getUsername().empty()) {
       qWarning() << QStringLiteral("Unable to parse invalid sip address.");
       return;
     }

src/components/calls/CallsListModel.cpp

@@ -95,7 +95,7 @@ void CallsListModel::launchAudioCall (const QString &sipAddress, const QHash<QSt
   shared_ptr<linphone::Core> core = CoreManager::getInstance()->getCore();
 
   shared_ptr<linphone::Address> address = core->interpretUrl(::Utils::appStringToCoreString(sipAddress));
-  if (!address)
+  if (!address || address->getUsername().empty())
     return;
 
   shared_ptr<linphone::CallParams> params = core->createCallParams(nullptr);
@@ -120,7 +120,7 @@ void CallsListModel::launchVideoCall (const QString &sipAddress) const {
   }
 
   shared_ptr<linphone::Address> address = core->interpretUrl(::Utils::appStringToCoreString(sipAddress));
-  if (!address)
+  if (!address || address->getUsername().empty())
     return;
 
   shared_ptr<linphone::CallParams> params = core->createCallParams(nullptr);