Symbol Editor: handle delete hotkey in block edit mode

eeschema/hotkeys.cpp

@@ -793,6 +793,13 @@ bool LIB_EDIT_FRAME::OnHotKey( wxDC* aDC, int aHotKey, const wxPoint& aPosition,
         break;
 
     case HK_DELETE:
+        if( blocInProgress )
+        {
+            cmd.SetId( ID_POPUP_DELETE_BLOCK );
+            Process_Special_Functions( cmd );
+        }
+        else
+        {
             if( !itemInEdit )
                 SetDrawItem( LocateItemUsingCursor( aPosition ) );
 
@@ -801,6 +808,7 @@ bool LIB_EDIT_FRAME::OnHotKey( wxDC* aDC, int aHotKey, const wxPoint& aPosition,
                 cmd.SetId( ID_POPUP_LIBEDIT_DELETE_ITEM );
                 Process_Special_Functions( cmd );
             }
+        }
         break;
 
     case HK_LIBEDIT_MOVE_GRAPHIC_ITEM: