Adds ifndef test to prevent double define of MSG_NOSIGNAL for OSX.
#define MAX_DEFAULT_BUFFER_SIZE 4u
#if defined(__APPLE__)
+#ifndef MSG_NOSIGNAL
#define MSG_NOSIGNAL (0)
#endif
+#endif
#define L_DEBUG(...) \
celix_logHelper_log(handle->logHelper, CELIX_LOG_LEVEL_DEBUG, __VA_ARGS__)
