certificate: Fix uninitialized memory
certificate: Fix uninitialized memory

Change-Id: Ibda97ff10679a5b60a412dcf3de01eaa514acddd
Signed-off-by: Alexandre Lision <7d08a0cacd438fbd836bb067d81931c32ac6e222@savoirfairelinux.com>

savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc,savoirfairelinux/ring-lrc