drop rsync patch again

src/default.nix

@@ -16,11 +16,6 @@
 , mkShellNoCC
 }:
 let
-  # TODO: add this to nixpkgs
-  rsync' = rsync.overrideAttrs (old: {
-    # https://github.com/WayneD/rsync/issues/511#issuecomment-1774612577
-    patches = [ ./rsync-fortified-strlcpy-fix.patch ];
-  });
   runtimeDeps = [
     gitMinimal # for git flakes
     # pinned because nix-copy-closure hangs if ControlPath provided for SSH: https://github.com/NixOS/nix/issues/8480
@@ -31,7 +26,7 @@ let
     gawk
     findutils
     gnused # needed by ssh-copy-id
-    rsync' # used to upload extra-files
+    rsync # used to upload extra-files
   ];
 in
 stdenv.mkDerivation {

src/rsync-fortified-strlcpy-fix.patch

@@ -1,49 +0,0 @@
-From 1f83963f59960150e8c46112daa8411324c1f209 Mon Sep 17 00:00:00 2001
-From: Jiri Slaby <jslaby@suse.cz>
-Date: Fri, 18 Aug 2023 08:26:20 +0200
-Subject: [PATCH] exclude: fix crashes with fortified strlcpy()
-
-Fortified (-D_FORTIFY_SOURCE=2 for gcc) builds make strlcpy() crash when
-its third parameter (size) is larger than the buffer:
-  $ rsync -FFXHav '--filter=merge global-rsync-filter' Align-37-43/ xxx
-  sending incremental file list
-  *** buffer overflow detected ***: terminated
-
-It's in the exclude code in setup_merge_file():
-  strlcpy(y, save, MAXPATHLEN);
-
-Note the 'y' pointer was incremented, so it no longer points to memory
-with MAXPATHLEN "owned" bytes.
-
-Fix it by remembering the number of copied bytes into the 'save' buffer
-and use that instead of MAXPATHLEN which is clearly incorrect.
-
-Fixes #511.
----
- exclude.c | 5 +++--
- 1 file changed, 3 insertions(+), 2 deletions(-)
-
-diff --git a/exclude.c b/exclude.c
-index ffe55b167..1a5de3b9e 100644
---- a/exclude.c
-+++ b/exclude.c
-@@ -720,7 +720,8 @@ static BOOL setup_merge_file(int mergelist_num, filter_rule *ex,
- 	parent_dirscan = True;
- 	while (*y) {
- 		char save[MAXPATHLEN];
--		strlcpy(save, y, MAXPATHLEN);
-+		/* copylen is strlen(y) which is < MAXPATHLEN. +1 for \0 */
-+		size_t copylen = strlcpy(save, y, MAXPATHLEN) + 1;
- 		*y = '\0';
- 		dirbuf_len = y - dirbuf;
- 		strlcpy(x, ex->pattern, MAXPATHLEN - (x - buf));
-@@ -734,7 +735,7 @@ static BOOL setup_merge_file(int mergelist_num, filter_rule *ex,
- 			lp->head = NULL;
- 		}
- 		lp->tail = NULL;
--		strlcpy(y, save, MAXPATHLEN);
-+		strlcpy(y, save, copylen);
- 		while ((*x++ = *y++) != '/') {}
- 	}
- 	parent_dirscan = False;
-