Initialize all members of non-TLS tsd wrapper when creating it

Not setting the initialized member leads to randomly calling the cleanup
function in cases it shouldn't be called (and isn't called in other
implementations).

include/jemalloc/internal/tsd.h

@@ -253,6 +253,7 @@ a_name##_tsd_get_wrapper(void)						\
 		} else {						\
 			static a_type tsd_static_data = a_initializer;	\
 			wrapper->isstatic = false;			\
+			wrapper->initialized = false;			\
 			wrapper->val = tsd_static_data;			\
 		}							\
 		if (pthread_setspecific(a_name##_tsd,			\