include/threads.h: return values should be integer type to prevent compiler warnings
/* Indicates thread error status */
-#define thrd_success ((FAR void *)OK)
-#define thrd_timedout ((FAR void *)ETIMEDOUT)
-#define thrd_busy ((FAR void *)EBUSY)
-#define thrd_nomem ((FAR void *)ENOMEM)
-#define thrd_error ((FAR void *)ERROR)
+#define thrd_success (OK)
+#define thrd_timedout (ETIMEDOUT)
+#define thrd_busy (EBUSY)
+#define thrd_nomem (ENOMEM)
+#define thrd_error (ERROR)
/* Defines the type of a mutex */
