openrsync: Fix a file descriptor leak

[Josiah Frentsos]

Index: main.c
===================================================================
RCS file: /cvs/src/usr.bin/rsync/main.c,v
retrieving revision 1.68
diff -u -p -r1.68 main.c
--- main.c      28 Apr 2023 10:24:38 -0000      1.68
+++ main.c      10 May 2023 17:43:23 -0000
@@ -602,6 +602,7 @@ basedir:
                        err(ERR_IPC, "dup2");
                if (dup2(fds[1], STDOUT_FILENO) == -1)
                        err(ERR_IPC, "dup2");
+               close(fds[1]);
                execvp(args[0], args);
                _exit(ERR_IPC);
                /* NOTREACHED */