remove useless API break

python/core/qgseditformconfig.sip.in

@@ -114,7 +114,7 @@ Set the active layout style for the attribute editor for this layer
  Get path or URL to the .ui form. Only meaningful with EditorLayout.UiFileLayout
 %End
 
-    bool setUiForm( const QString &ui, QString *errMsg /Out/ = 0 );
+    void setUiForm( const QString &ui );
 %Docstring
 Set path to the .ui form.
 When a string is provided in ``ui``, the layout style will be set to EditorLayout.UiFileLayout,

src/app/qgsattributesformproperties.cpp

@@ -684,9 +684,7 @@ void QgsAttributesFormProperties::apply()
     editFormConfig.addTab( createAttributeEditorWidget( tabItem, nullptr, false ) );
   }
 
-  QString *errMsg = new QString();
-  if ( !editFormConfig.setUiForm( mEditFormLineEdit->text(), errMsg ) )
-    QgisApp::instance()->messageBar()->pushMessage( *errMsg, Qgis::Warning );
+  editFormConfig.setUiForm( mEditFormLineEdit->text() );
 
   editFormConfig.setLayout( ( QgsEditFormConfig::EditorLayout ) mEditorLayoutComboBox->currentIndex() );
 

src/core/qgseditformconfig.cpp

@@ -152,9 +152,8 @@ QString QgsEditFormConfig::uiForm() const
   return d->mUiFormPath;
 }
 
-bool QgsEditFormConfig::setUiForm( const QString &ui, QString *errMsg )
+void QgsEditFormConfig::setUiForm( const QString &ui )
 {
-  Q_UNUSED( errMsg );
   if ( !ui.isEmpty() && !QUrl::fromUserInput( ui ).isLocalFile() )
   {
     // any existing download will not be restarted!
@@ -170,8 +169,6 @@ bool QgsEditFormConfig::setUiForm( const QString &ui, QString *errMsg )
     setLayout( UiFileLayout );
   }
   d->mUiFormPath = ui;
-
-  return true;
 }
 
 bool QgsEditFormConfig::readOnly( int idx ) const
@@ -278,9 +275,7 @@ void QgsEditFormConfig::readXml( const QDomNode &node, QgsReadWriteContext &cont
   if ( !editFormNode.isNull() )
   {
     QDomElement e = editFormNode.toElement();
-    QString *errMsg = new QString();
-    if ( !setUiForm( context.pathResolver().readPath( e.text() ), errMsg ) )
-      context.pushMessage( *errMsg, Qgis::Warning );
+    setUiForm( context.pathResolver().readPath( e.text() ) );
   }
 
   QDomNode editFormInitNode = node.namedItem( QStringLiteral( "editforminit" ) );

src/core/qgseditformconfig.h

@@ -148,7 +148,7 @@ class CORE_EXPORT QgsEditFormConfig
      * If \a ui is a URL, a local copy of the file will be made and will be used to create the forms
      * \a context is provided to save error messages
      */
-    bool setUiForm( const QString &ui, QString *errMsg SIP_OUT = nullptr );
+    void setUiForm( const QString &ui );
 
     /**
      * Set the editor widget config for a widget which is not for a simple field.