fix thread setname on NetBSD

Signed-off-by: R4SAS <r4sas@i2pmail.org>

libi2pd/util.cpp

@@ -123,6 +123,8 @@ namespace util
 		pthread_setname_np(name);
 #elif defined(__FreeBSD__) || defined(__OpenBSD__)
 		pthread_set_name_np(pthread_self(), name);
+#elif defined(__NetBSD__)
+		pthread_setname_np(pthread_self(), "%s", (void *)name);
 #else
 		pthread_setname_np(pthread_self(), name);
 #endif