Thread: pgsql: Fix a couple of memory leaks in src/bin/pg_basebackup/

Fix a couple of memory leaks in src/bin/pg_basebackup/

These have been introduced by 7fbe0c8, and could happen for
pg_basebackup and pg_receivewal.

Per report from Coverity for the ones in walmethods.c, I have spotted
the ones in receivelog.c after more review.

Backpatch-through: 10

Branch
------
REL_14_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/b0d28671964d61416248789e3cee4508ac6281b4

Modified Files
--------------
src/bin/pg_basebackup/receivelog.c | 6 ++++++
src/bin/pg_basebackup/walmethods.c | 7 +++++++
src/bin/pg_basebackup/walmethods.h | 4 ++--
3 files changed, 15 insertions(+), 2 deletions(-)