fix crash with 'load shaders at startup' (was occuring before ogl init)

radiant/main.cpp

@@ -521,10 +521,6 @@ int main( int argc, char* argv[] ){
 	{
 		Map_New();
 	}
-	// load up shaders now that we have the map loaded
-	// eviltypeguy
-	TextureBrowser_ShowStartupShaders();
-
 
 	remove_local_pid();
 

radiant/texwindow.cpp

@@ -1633,6 +1633,8 @@ protected:
 	void initializeGL() override
 	{
 		glwidget_context_created( *this );
+		// show definitely after gl init, otherwise crash
+		TextureBrowser_ShowStartupShaders();
 	}
 	void resizeGL( int w, int h ) override
 	{

radiant/texwindow.h

@@ -29,7 +29,6 @@ QWidget* TextureBrowser_constructWindow( QWidget* toplevel );
 void TextureBrowser_destroyWindow();
 
 
-void TextureBrowser_ShowStartupShaders();
 const char* TextureBrowser_GetSelectedShader();
 
 void TextureBrowser_Construct();