Possibly-uninit variable in pem_lib.c.

Can't really happen, but the flow of control isn't obvious. Add an
initializer.

(Imported from upstream's fa2ae04c40510262d198131c758acd8aa5a9b4ce)

Change-Id: If393687bca9f505b825feffaf2a63895a0ea5b6a
1 file changed