Fix missing GetWindowSettings for LIB_EDIT_FRAME

Fixes #4389

eeschema/libedit/lib_edit_frame.cpp

@@ -239,10 +239,22 @@ void LIB_EDIT_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg)
 }
 
 
+WINDOW_SETTINGS* LIB_EDIT_FRAME::GetWindowSettings( APP_SETTINGS_BASE* aCfg )
+{
+    auto cfg = Pgm().GetSettingsManager().GetAppSettings<LIBEDIT_SETTINGS>();
+
+    wxCHECK_MSG( cfg, nullptr, "Could not load libedit settings" );
+
+    return &cfg->m_Window;
+}
+
+
 COLOR_SETTINGS* LIB_EDIT_FRAME::GetColorSettings()
 {
     auto cfg = Pgm().GetSettingsManager().GetAppSettings<LIBEDIT_SETTINGS>();
 
+    wxCHECK_MSG( cfg, nullptr, "Could not load libedit settings" );
+
     if( cfg->m_UseEeschemaColorSettings )
         return m_colorSettings;
     else

eeschema/libedit/lib_edit_frame.h

@@ -234,6 +234,8 @@ public:
     void LoadSettings( APP_SETTINGS_BASE* aCfg ) override;
     void SaveSettings( APP_SETTINGS_BASE* aCfg ) override;
 
+    WINDOW_SETTINGS* GetWindowSettings( APP_SETTINGS_BASE* aCfg ) override;
+
     LIBEDIT_SETTINGS* GetSettings()
     {
         return m_settings;