errinjct: Null terminate buffer from read()
errinjct: Null terminate buffer from read()

Null terminate buffers filled when calling read(). Issue uncovered
with Coverity Scans.

Signed-off-by: Nathan Fontenot <4b7bfe500077bf77c5456931a34b0b70e36e0bc6@linux.vnet.ibm.com>

shenki/powerpc-utils,shenki/powerpc-utils,shenki/powerpc-utils