Init: exit if the primary child process exits

apps/src/init.c

@@ -67,11 +67,14 @@ int main()
         return 1;
     }
 
+    pid_t result;
+
     for (;;)
     {
-        while (wait(NULL) == 0) // No child has exited yet
+        while ((result = wait(NULL)) == 0) // No child has exited yet
         {
             msleep(100);
         }
+        if (result == child) { return 0; }
     }
 }