Remove redundant performance changes.

(Alex had already moved these to const char, which
avoids wxString's c'tor.)

Fixes https://gitlab.com/kicad/code/kicad/-/issues/20506

(cherry picked from commit 7232a98b65)

eeschema/sch_item.cpp

@@ -455,10 +455,8 @@ int SCH_ITEM::compare( const SCH_ITEM& aOther, int aCompareFlags ) const
 
 const wxString& SCH_ITEM::GetDefaultFont() const
 {
-    static const char eeschema[] = "eeschema";
-
     SETTINGS_MANAGER&  mgr = Pgm().GetSettingsManager();
-    EESCHEMA_SETTINGS* cfg = mgr.GetAppSettings<EESCHEMA_SETTINGS>( eeschema );
+    EESCHEMA_SETTINGS* cfg = mgr.GetAppSettings<EESCHEMA_SETTINGS>( "eeschema" );
 
     return cfg->m_Appearance.default_font;
 }

pcbnew/pcb_base_frame.cpp

@@ -895,41 +895,35 @@ void PCB_BASE_FRAME::SaveSettings( APP_SETTINGS_BASE* aCfg )
 
 PCBNEW_SETTINGS* PCB_BASE_FRAME::GetPcbNewSettings() const
 {
-    static const char pcbnew[] = "pcbnew";
-    return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( pcbnew );
+    return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( "pcbnew" );
 }
 
 
 FOOTPRINT_EDITOR_SETTINGS* PCB_BASE_FRAME::GetFootprintEditorSettings() const
 {
-    static const char fpedit[] = "fpedit";
-    return Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>( fpedit );
+    return Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>( "fpedit" );
 }
 
 
 PCB_VIEWERS_SETTINGS_BASE* PCB_BASE_FRAME::GetViewerSettingsBase() const
 {
-    static const char pcbnew[] = "pcbnew";
-    static const char fpedit[] = "fpedit";
-    static const char cvpcb[] = "cvpcb";
-
     switch( GetFrameType() )
     {
     case FRAME_PCB_EDITOR:
     case FRAME_PCB_DISPLAY3D:
     default:
-        return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( pcbnew );
+        return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( "pcbnew" );
 
     case FRAME_FOOTPRINT_EDITOR:
     case FRAME_FOOTPRINT_WIZARD:
-        return Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>( fpedit );
+        return Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>( "fpedit" );
 
     case FRAME_FOOTPRINT_VIEWER:
     case FRAME_FOOTPRINT_CHOOSER:
     case FRAME_FOOTPRINT_PREVIEW:
     case FRAME_CVPCB:
     case FRAME_CVPCB_DISPLAY:
-        return Pgm().GetSettingsManager().GetAppSettings<CVPCB_SETTINGS>( cvpcb );
+        return Pgm().GetSettingsManager().GetAppSettings<CVPCB_SETTINGS>( "cvpcb" );
     }
 }
 

pcbnew/pcb_draw_panel_gal.cpp

@@ -463,8 +463,7 @@ void PCB_DRAW_PANEL_GAL::UpdateColors()
     }
     else
     {
-        static const char pcbnew[] = "pcbnew";
-        PCBNEW_SETTINGS*  app = Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( pcbnew );
+        auto* app = Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( "pcbnew" );
 
         if( app )
             cs = Pgm().GetSettingsManager().GetColorSettings( app->m_ColorTheme );

pcbnew/pcb_painter.cpp

@@ -83,27 +83,23 @@ PCBNEW_SETTINGS* pcbconfig()
 // returns the viewer options existing to Cvpcb and Pcbnew
 PCB_VIEWERS_SETTINGS_BASE* PCB_PAINTER::viewer_settings()
 {
-    static const char pcbnew[] = "pcbnew";
-    static const char fpedit[] = "fpedit";
-    static const char cvpcb[] = "cvpcb";
-
     switch( m_frameType )
     {
     case FRAME_PCB_EDITOR:
     case FRAME_PCB_DISPLAY3D:
     default:
-        return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( pcbnew );
+        return Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>( "pcbnew" );
 
     case FRAME_FOOTPRINT_EDITOR:
     case FRAME_FOOTPRINT_WIZARD:
-        return Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>( fpedit );
+        return Pgm().GetSettingsManager().GetAppSettings<FOOTPRINT_EDITOR_SETTINGS>( "fpedit" );
 
     case FRAME_FOOTPRINT_VIEWER:
     case FRAME_FOOTPRINT_CHOOSER:
     case FRAME_FOOTPRINT_PREVIEW:
     case FRAME_CVPCB:
     case FRAME_CVPCB_DISPLAY:
-        return Pgm().GetSettingsManager().GetAppSettings<CVPCB_SETTINGS>( cvpcb );
+        return Pgm().GetSettingsManager().GetAppSettings<CVPCB_SETTINGS>( "cvpcb" );
     }
 }