Eeschema: Fix crash of modifying graphic item and abort with ESC by adding re-entrancy guards

eeschema/tools/ee_point_editor.cpp

@@ -344,7 +344,8 @@ private:
 
 EE_POINT_EDITOR::EE_POINT_EDITOR() :
     EE_TOOL_BASE<SCH_BASE_FRAME>( "eeschema.PointEditor" ),
-    m_editedPoint( nullptr )
+    m_editedPoint( nullptr ),
+    m_inPointEditor( false )
 {
 }
 
@@ -411,6 +412,11 @@ int EE_POINT_EDITOR::Main( const TOOL_EVENT& aEvent )
     if( !m_selectionTool )
         return 0;
 
+    if( m_inPointEditor )
+        return 0;
+
+    REENTRANCY_GUARD guard( &m_inPointEditor );
+
     if( m_isSymbolEditor )
     {
         SYMBOL_EDIT_FRAME* editor = getEditFrame<SYMBOL_EDIT_FRAME>();

eeschema/tools/ee_point_editor.h

@@ -105,6 +105,9 @@ private:
     ///< Currently edited point, NULL if there is none.
     EDIT_POINT* m_editedPoint;
 
+    ///< Re-entrancy guards
+    bool m_inPointEditor;
+
     ///< Currently available edit points.
     std::shared_ptr<EDIT_POINTS> m_editPoints;
 };