unitytls updates based on curl API changes

* vtls: replace "none"-functions with NULL pointers
 2bf48b4
* lots of function pointers removed from Curl_ssl struct
* adjust function prototypes to match changes in Curl_ssl struct

Author: fadedreamz

lib/config-android-arm32.h

@@ -147,7 +147,7 @@
 #define HAVE_WRITEV 1
 #define HAVE_ZLIB_H 1
 #define LT_OBJDIR ".libs/"
-#define OS "arm-unknown-linux-gnu"
+#define CURL_OS "arm-unknown-linux-gnu"
 #define PACKAGE "curl"
 #define PACKAGE_BUGREPORT "a suitable curl mailing list: https://curl.se/mail/"
 #define PACKAGE_NAME "curl"

lib/config-android-arm64.h

@@ -147,7 +147,7 @@
 #define HAVE_WRITEV 1
 #define HAVE_ZLIB_H 1
 #define LT_OBJDIR ".libs/"
-#define OS "aarch64-unknown-linux-gnu"
+#define CURL_OS "aarch64-unknown-linux-gnu"
 #define PACKAGE "curl"
 #define PACKAGE_BUGREPORT "a suitable curl mailing list: https://curl.se/mail/"
 #define PACKAGE_NAME "curl"

lib/config-android-x86.h

@@ -147,7 +147,7 @@
 #define HAVE_WRITEV 1
 #define HAVE_ZLIB_H 1
 #define LT_OBJDIR ".libs/"
-#define OS "i686-pc-linux-gnu"
+#define CURL_OS "i686-pc-linux-gnu"
 #define PACKAGE "curl"
 #define PACKAGE_BUGREPORT "a suitable curl mailing list: https://curl.se/mail/"
 #define PACKAGE_NAME "curl"

lib/config-android-x86_64.h

@@ -147,7 +147,7 @@
 #define HAVE_WRITEV 1
 #define HAVE_ZLIB_H 1
 #define LT_OBJDIR ".libs/"
-#define OS "x86_64-pc-linux-gnu"
+#define CURL_OS "x86_64-pc-linux-gnu"
 #define PACKAGE "curl"
 #define PACKAGE_BUGREPORT "a suitable curl mailing list: https://curl.se/mail/"
 #define PACKAGE_NAME "curl"

lib/config-linux.h

@@ -798,7 +798,7 @@
 #define NTLM_WB_FILE "/usr/bin/ntlm_auth"
 
 /* cpu-machine-OS */
-#define OS "x86_64-pc-linux-gnu"
+#define CURL_OS "x86_64-pc-linux-gnu"
 
 /* Name of package */
 #define PACKAGE "curl"

lib/config-macos.h

@@ -140,7 +140,7 @@
 #define HAVE_WRITEV 1
 #define HAVE_ZLIB_H 1
 #define LT_OBJDIR ".libs/"
-#define OS "x86_64-apple-darwin21.6.0"
+#define CURL_OS "x86_64-apple-darwin21.6.0"
 #define PACKAGE "curl"
 #define PACKAGE_BUGREPORT "a suitable curl mailing list: https://curl.se/mail/"
 #define PACKAGE_NAME "curl"

lib/config-qnx.h

@@ -798,7 +798,7 @@
 #define NTLM_WB_FILE "/usr/bin/ntlm_auth"
 
 /* cpu-machine-OS */
-#define OS "x86_64-pc-linux-gnu"
+#define CURL_OS "x86_64-pc-linux-gnu"
 
 /* Name of package */
 #define PACKAGE "curl"

lib/curl_addrinfo.c

@@ -46,8 +46,10 @@
 
 #if defined(USE_UNIX_SOCKETS) && defined(WINAPI_FAMILY) && \
     ((WINAPI_FAMILY == WINAPI_FAMILY_APP) || (WINAPI_FAMILY == WINAPI_FAMILY_GAMES) || (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP))
-   /* Required for sockaddr_un type */
-#  if !defined(WIN32_SOCKADDR_UN)
+   /* Required for sockaddr_un type — skip if curl_setup.h's local typedef
+      already ran (it defines UNIX_PATH_MAX) or if afunix.h was pulled in
+      earlier in the translation unit. */
+#  if !defined(UNIX_PATH_MAX)
 #    include <afunix.h>
 #  endif
 #endif

lib/curl_setup.h

@@ -149,7 +149,8 @@
 #  include "config-win32ce.h"
 #else
 #  ifdef _WIN32
-#  include "config-win32.h"
+#    include "config-win32.h"
+#  endif
 #endif
 
 #if defined(__MACH__)