Add missing set_pglocale_pgservice() for pg_walsummary and pg_combinebackup

These calls are required to make both tools work with NLS.

Author: Kyotaro Horiguchi
Discussion: https://postgr.es/m/20240408.162702.183779935636035593.horikyota.ntt@gmail.com

src/bin/pg_combinebackup/pg_combinebackup.c

@@ -154,6 +154,7 @@ main(int argc, char *argv[])
 
 	pg_logging_init(argv[0]);
 	progname = get_progname(argv[0]);
+	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_combinebackup"));
 	handle_help_version_opts(argc, argv, progname, help);
 
 	memset(&opt, 0, sizeof(opt));

src/bin/pg_walsummary/pg_walsummary.c

@@ -67,6 +67,7 @@ main(int argc, char *argv[])
 
 	pg_logging_init(argv[0]);
 	progname = get_progname(argv[0]);
+	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_walsummary"));
 	handle_help_version_opts(argc, argv, progname, help);
 
 	/* process command-line options */