Fixed bug the Detail remains in Group list after the detail is deleted in

Details mode.

--HG--
branch : feature

src/libs/vpatterndb/vcontainer.cpp

@@ -294,6 +294,7 @@ void VContainer::ClearForFullParse()
     _id = NULL_ID;
 
     d->details->clear();
+    d->pieces->clear();
     ClearVariables(VarType::Increment);
     ClearVariables(VarType::LineAngle);
     ClearVariables(VarType::LineLength);