File _link of Package failed_paho-mqtt-c

<link project="devel:libraries:c_c++" package="paho-mqtt-c" rev="68c8dd965748ac4ec4a7a414a390e327" baserev="68c8dd965748ac4ec4a7a414a390e327">
  <patches>
    <branch/>
  </patches>
</link>