testdisplayinfo.c forgot to SDL_Quit() at the end.
diff --git a/test/testdisplayinfo.c b/test/testdisplayinfo.c
index f7c7e13..d824446 100644
--- a/test/testdisplayinfo.c
+++ b/test/testdisplayinfo.c
@@ -81,6 +81,7 @@ main(int argc, char *argv[])
SDL_Log("\n");
}
+ SDL_Quit();
return 0;
}