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

1 files changed, 6 insertions, 0 deletions

diff --git a/src/bin/pg_basebackup/receivelog.c b/src/bin/pg_basebackup/receivelog.c
index 7af90093207..44cb5b36611 100644
--- a/src/bin/pg_basebackup/receivelog.c
+++ b/src/bin/pg_basebackup/receivelog.c
@@ -117,6 +117,7 @@ open_walfile(StreamCtl *stream, XLogRecPtr startpoint)
 		{
 			pg_log_error("could not get size of write-ahead log file \"%s\": %s",
 						 fn, stream->walmethod->getlasterror());
+			pg_free(fn);
 			return false;
 		}
 		if (size == WalSegSz)
@@ -127,6 +128,7 @@ open_walfile(StreamCtl *stream, XLogRecPtr startpoint)
 			{
 				pg_log_error("could not open existing write-ahead log file \"%s\": %s",
 							 fn, stream->walmethod->getlasterror());
+				pg_free(fn);
 				return false;
 			}
 
@@ -140,6 +142,7 @@ open_walfile(StreamCtl *stream, XLogRecPtr startpoint)
 			}
 
 			walfile = f;
+			pg_free(fn);
 			return true;
 		}
 		if (size != 0)
@@ -151,6 +154,7 @@ open_walfile(StreamCtl *stream, XLogRecPtr startpoint)
 								  "write-ahead log file \"%s\" has %d bytes, should be 0 or %d",
 								  size),
 						 fn, (int) size, WalSegSz);
+			pg_free(fn);
 			return false;
 		}
 		/* File existed and was empty, so fall through and open */
@@ -164,9 +168,11 @@ open_walfile(StreamCtl *stream, XLogRecPtr startpoint)
 	{
 		pg_log_error("could not open write-ahead log file \"%s\": %s",
 					 fn, stream->walmethod->getlasterror());
+		pg_free(fn);
 		return false;
 	}
 
+	pg_free(fn);
 	walfile = f;
 	return true;
 }