Fix blunder in 09093eee

src/framework/WindowManager.cpp

@@ -42,7 +42,7 @@ bool WindowManager::initialize(const int width, const int height, const int fram
 
 	// allow screensaver (or we might block BOINC's own, our parent)
 	SDL_EnableScreenSaver();
-	if (SDL_IsScreenSaverEnabled == SDL_FALSE) {
+	if (SDL_IsScreenSaverEnabled() == SDL_FALSE) {
 		cerr << "Screensavers couldn't be enabled! This might break usage as BOINC screensaver..." << endl;
 	}