pthread: fix a type mismatch warning
@@ -22,7 +22,7 @@ TEST_CASE("pthread create join", "[pthread]")
volatile int num = 7;
volatile bool attr_init = false;
void *thread_rval = NULL;
- pthread_t new_thread = NULL;
+ pthread_t new_thread = (pthread_t)NULL;
pthread_attr_t attr;
if (TEST_PROTECT()) {
