package/libgit2: bump version to 1.6.4

* Remove patch applied upstream.
* Upstream fixed building inside the source tree, but still does not
  recommend it, so keep LIBGIT2_SUPPORTS_IN_SOURCE_BUILD = NO

Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 4aef53575bdb9d1e74ca5600eb93079964d2e8fd)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libgit2/0001-sysdir-Do-not-declare-win32-functions-on-non-win32-p.patch

@@ -1,35 +0,0 @@
-From 20811c5aa9c528405eaa3f88ff22a9adebafa9e6 Mon Sep 17 00:00:00 2001
-From: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
-Date: Wed, 8 Mar 2023 14:00:52 +0100
-Subject: [PATCH] sysdir: Do not declare win32 functions on non-win32 platforms
-
-These declaration poses problems on some embedded or retro Linux systems
-that deliberately disable support for wchar_t from their libc.
-
-Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
-[Retrieved from:
-https://github.com/libgit2/libgit2/commit/20811c5aa9c528405eaa3f88ff22a9adebafa9e6]
----
- src/libgit2/sysdir.h | 2 ++
- 1 file changed, 2 insertions(+)
-
-diff --git a/src/libgit2/sysdir.h b/src/libgit2/sysdir.h
-index 1d15bbf43..03f59e1de 100644
---- a/src/libgit2/sysdir.h
-+++ b/src/libgit2/sysdir.h
-@@ -134,10 +134,12 @@ extern int git_sysdir_set(git_sysdir_t which, const char *paths);
-  */
- extern int git_sysdir_reset(void);
- 
-+#ifdef GIT_WIN32
- /** Sets the registry system dir to a mock; for testing.  */
- extern int git_win32__set_registry_system_dir(const wchar_t *mock_sysdir);
- 
- /** Find the given system dir; for testing. */
- extern int git_win32__find_system_dirs(git_str *out, const char *subdir);
-+#endif
- 
- #endif
--- 
-2.39.2
-

package/libgit2/libgit2.hash

@@ -1,3 +1,3 @@
 # Locally calculated
-sha256  d557fbf35557bb5df53cbf38ae0081edb4a36494ec0d19741fa673e509245f8f  libgit2-1.6.2.tar.gz
+sha256  d25866a4ee275a64f65be2d9a663680a5cf1ed87b7ee4c534997562c828e500d  libgit2-1.6.4.tar.gz
 sha256  6f3c2cd59b057e366c1acc073b038135c52d77892bb33bd4d931c5369d3f062b  COPYING

package/libgit2/libgit2.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBGIT2_VERSION = 1.6.2
+LIBGIT2_VERSION = 1.6.4
 LIBGIT2_SITE = $(call github,libgit2,libgit2,v$(LIBGIT2_VERSION))
 LIBGIT2_LICENSE = \
 	GPL-2.0 with linking exception, \