journald: free the allocated memory before returning from dev_kmsg_record
This fixes a minor memory leak.
(cherry picked from commit 30eddcd51b8a472e05d3b8d1f0b89fbd3e094d71)
Resolves: #1696224
patch_name: 0142-journald-free-the-allocated-memory-before-returning-.patch
present_in_specfile: true
location_in_specfile: 142
squash_commits: true