Correct a typo in tsan_pthread_setname_np in the FreeBSD code
Noted by David CARLIER.
#elif defined(__FreeBSD__)
#include <pthread_np.h>
#define USE_PTHREAD_SETNAME_NP 1
-#define tasn_pthread_setname_np pthread_set_name_np
+#define tsan_pthread_setname_np pthread_set_name_np
#elif defined(__NetBSD__)
#define USE_PTHREAD_SETNAME_NP 1
#define tsan_pthread_setname_np(a, b) pthread_setname_np((a), "%s", (void *)(b))
