fix: overflow was possible since 1000 is type long

client/util_posix.c

@@ -130,7 +130,7 @@ uint64_t msclock(void) {
 #else
 	struct timespec t;
 	clock_gettime(CLOCK_MONOTONIC, &t);
-	return (t.tv_sec * 1000 + t.tv_nsec / 1000000);
+	return ( 1000 * (uint64_t)t.tv_sec + t.tv_nsec / 1000000);
 #endif
 }