Sketch: Fix creating the shape of a sketch

SketchObject::buildShape() used the geometries as they were created by the user. However, they are not accurate enough in order
to create a closed wire. Instead the geometries after running the solver must be used because they are guaranteed to be accurate.

src/Mod/Sketcher/App/SketchObject.cpp

@@ -323,7 +323,10 @@ void SketchObject::buildShape() {
     std::vector<Part::TopoShape> shapes;
     std::vector<Part::TopoShape> vertices;
     int geoId =0;
-    for(auto geo : getInternalGeometry()) {
+
+    // get the geometry after running the solver
+    auto geometries = solvedSketch.extractGeometry();
+    for(auto geo : geometries) {
         ++geoId;
         if(GeometryFacade::getConstruction(geo)) {
             continue;
@@ -347,6 +350,10 @@ void SketchObject::buildShape() {
         }
     }
 
+    for (auto geo : geometries) {
+        delete geo;
+    }
+
     for(int i=2;i<ExternalGeo.getSize();++i) {
         auto geo = ExternalGeo[i];
         auto egf = ExternalGeometryFacade::getFacade(geo);