Add zero clearing of allocated nmea buffer to ensure the nmea string is null terminated. Change-Id: I78e8b03bc7d0f9b69e1a51356da379a57a647cad CRs-Fixed: 2041933
* CAF release: LA.BR.1.3.6_rb1.10 Change-Id: I05b378f4493e19860b47e0d596c3e0515cd963fb