Plug database connection leak.

config/Reports/dailyproductiondetail.xml

 					output.writeEndElement();
 					var unroastedList = sqlToArray(query.value(4));
 					output.writeStartElement("td");
+					var greensQuery = new QSqlQuery();
+					greensQuery.prepare("SELECT name, reference FROM coffees WHERE id = :id");
 					for(var i = 0;  i < unroastedList.length; i++)
-					{
-						var greensQuery = new QSqlQuery();
-						greensQuery.prepare("SELECT name, reference FROM coffees WHERE id = :id");
+					{	
 						greensQuery.bind(":id", Number(unroastedList[i]));
 						greensQuery.exec();
 						if(i != 0)
 						greensQuery.next();
 						output.writeCDATA(greensQuery.value(0) + " (" + unroastedList[i] + ")" + (greensQuery.value(1) == "" ? "" : " ref: " + greensQuery.value(1)));
 					}
+					greensQuery = greensQuery.invalidate();
 					output.writeEndElement();
 					switch(unitBox.currentIndex)
 					{
 					output.writeTextElement("td", query.value(2));
 					output.writeEndElement();
 				}
+				query = query.invalidate();
+				subQuery = subQuery.invalidate();
 				output.writeEndElement();
 				output.writeStartElement("tfoot");