File ninvaders-sighandler_t.patch of Package ninvaders

Fixes the compile-time error show below.

[    5s] nInvaders.c: In function ‘setUpTimer’:
[    5s] nInvaders.c:323:29: error: assignment to ‘__sighandler_t’ {aka ‘void (*)(int)’} from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
[    5s]   323 |         myAction.sa_handler = &handleTimer;
[    5s]       |

---
Index: ninvaders-0.1.1/nInvaders.c
===================================================================
--- ninvaders-0.1.1.orig/nInvaders.c
+++ ninvaders-0.1.1/nInvaders.c
@@ -211,7 +211,7 @@ void readInput()
  * timer
  * this method is executed every 1 / FPS seconds  
  */
-void handleTimer()
+void handleTimer(int signum)
 {
 	static int aliens_move_counter = 0; 
 	static int aliens_shot_counter = 0;