made example spawn program exit after child

programs/README.md

@@ -2,7 +2,7 @@
 
 Note that these programs are of poor quality.
 
-* `simple.c` does some arithmetic in a loop, occasionally prints something rather random (the sequence goes `90,90,90,2386,2386,ae86,520c,1cbde,...`)
+* `simple.c` does some arithmetic in a loop, occasionally prints something rather random (the sequence goes `90,90,90,2386,2386,ae86,520c,1cbdc,1cbde...`)
 * `spawn.c` this thing spawn a new thread and exits when the thread overwrites a value.
 
 ## Compiling

programs/spawn.c

@@ -34,7 +34,7 @@ int thread(void* args)
 
     dbgln(buff, (int) (end - buff));
 
-    // *((int*) args) = 0;
+    *((int*) args) = 0;
 
     return arg;
 }