ugh?

src/twn_timer.c

@@ -2,6 +2,7 @@
 #include "twn_engine_context_c.h"
 
 #include <SDL2/SDL.h>
+#include <stdlib.h>
 
 static SDL_TimerID sanity_timer;
 
@@ -19,7 +20,7 @@ static uint32_t sanity_timer_handler(uint32_t interval, void *data) {
 
     /* TODO: figure out the most portable way to do it */
     /* TODO: different type of behavior is possible, especially for debugging */
-    quick_exit(EXIT_FAILURE);
+    exit(EXIT_FAILURE);
 }