Code modernisation

Author: m-kuhn

src/app/qgsgeometryvalidationmodel.h

@@ -62,8 +62,7 @@ class QgsGeometryValidationModel : public QAbstractItemModel
   private:
     struct FeatureErrors
     {
-      FeatureErrors()
-      {}
+      FeatureErrors() = default;
 
       FeatureErrors( QgsFeatureId fid )
         : fid( fid )

src/app/qgsgeometryvalidationservice.cpp

@@ -45,7 +45,7 @@ void QgsGeometryValidationService::fixError( QgsGeometryCheckError *error, int m
 
   QgsFeaturePool *featurePool = mFeaturePools.value( error->layerId() );
 
-  QgsVectorLayer *layer;
+  QgsVectorLayer *layer = nullptr;
 
   if ( featurePool )
     layer = featurePool->layer();