Merge branch 'next'

DONATIONS.txt

@@ -380,4 +380,4 @@ Thos. O'Meara Photography
 Adam Chevalier
 Mike Mulligan
 Gordon Stahl
- 
+Serge Michaux 

companion/src/mdichild.cpp

@@ -674,8 +674,8 @@ void MdiChild::print(int model, QString filename)
   }
 
   if (pd) {
+    pd->setAttribute(Qt::WA_DeleteOnClose, true);
     pd->show();
-    delete pd;
   }
 }