Fix build

I'm not 100% sure if the point == mSnapMatch.point() comparison was
intended be done using QgsPointXY or QgsPoint objects here!

Use QgsPointXY to keep the behavior the same from
before the duplicate QgsPointXY == operator was removed...

Author: nyalldawson

src/gui/qgsadvanceddigitizingdockwidget.cpp

@@ -1391,7 +1391,9 @@ bool QgsAdvancedDigitizingDockWidget::applyConstraints( QgsMapMouseEvent *e )
   mSnapMatch = context.snappingUtils->snapToMap( point, nullptr, true );
   if ( mSnapMatch.layer() )
   {
-    if ( ( ( mSnapMatch.hasVertex() || mSnapMatch.hasLineEndpoint() ) && ( point == mSnapMatch.point() ) )
+      // note ND: I'm not 100% sure if the point == mSnapMatch.point() comparison was intended be done using QgsPointXY or QgsPoint objects here!
+      // I'm using QgsPointXY here to keep the behavior the same from before a duplicate QgsPointXY == operator was removed...
+      if ( ( ( mSnapMatch.hasVertex() || mSnapMatch.hasLineEndpoint() ) && ( QgsPointXY( point ) == mSnapMatch.point() ) )
          || ( mSnapMatch.hasEdge() && QgsProject::instance()->topologicalEditing() ) )
     {
       e->snapPoint();