[TD] handle deletions of hatches

- also uniform line endings in ViewProviderLeader.cpp

src/Mod/TechDraw/Gui/ViewProviderLeader.cpp

@@ -236,8 +236,8 @@ bool ViewProviderLeader::onDelete(const std::vector<std::string> &)
 {
     // a leader line cannot be deleted if it has a child weld symbol
 
-    // get childs
-    auto childs = claimChildren();
+    // get childs
+    auto childs = claimChildren();
 
     if (!childs.empty()) {
         QString bodyMessage;
@@ -258,7 +258,7 @@ bool ViewProviderLeader::canDelete(App::DocumentObject *obj) const
 {
     // deletions of Leader line objects don't destroy anything
     // thus we can pass this action
-    // that the parent view cannot be deleted is handled
+    // that the parent view cannot be deleted is handled
     // in its onDelete() function
     Q_UNUSED(obj)
     return true;