Use correct format placeholder for block numbers

Should be %u rather than %d.

src/backend/access/gist/gistbuild.c

@@ -1212,7 +1212,7 @@ gistBufferingFindCorrectParent(GISTBuildState *buildstate,
 		 * number.
 		 */
 		if (*parentblkno == InvalidBlockNumber)
-			elog(ERROR, "no parent buffer provided of child %d", childblkno);
+			elog(ERROR, "no parent buffer provided of child %u", childblkno);
 		parent = *parentblkno;
 	}
 
@@ -1545,7 +1545,7 @@ gistGetParent(GISTBuildState *buildstate, BlockNumber child)
 										   HASH_FIND,
 										   &found);
 	if (!found)
-		elog(ERROR, "could not find parent of block %d in lookup table", child);
+		elog(ERROR, "could not find parent of block %u in lookup table", child);
 
 	return entry->parentblkno;
 }

src/backend/access/heap/vacuumlazy.c

@@ -2260,7 +2260,7 @@ static void
 lazy_vacuum_heap_rel(LVRelState *vacrel)
 {
 	int			tupindex;
-	int			vacuumed_pages;
+	BlockNumber	vacuumed_pages;
 	PGRUsage	ru0;
 	Buffer		vmbuffer = InvalidBuffer;
 	LVSavedErrInfo saved_err_info;

src/backend/replication/basebackup.c

@@ -1676,7 +1676,7 @@ sendFile(const char *readfilename, const char *tarfilename,
 		{
 			ereport(WARNING,
 					(errmsg("could not verify checksum in file \"%s\", block "
-							"%d: read buffer size %d and page size %d "
+							"%u: read buffer size %d and page size %d "
 							"differ",
 							readfilename, blkno, (int) cnt, BLCKSZ)));
 			verify_checksum = false;
@@ -1749,7 +1749,7 @@ sendFile(const char *readfilename, const char *tarfilename,
 						if (checksum_failures <= 5)
 							ereport(WARNING,
 									(errmsg("checksum verification failed in "
-											"file \"%s\", block %d: calculated "
+											"file \"%s\", block %u: calculated "
 											"%X but expected %X",
 											readfilename, blkno, checksum,
 											phdr->pd_checksum)));