Libxslt: Fix compilation on VS 2015

Change-Id: Icb7f7cb20f5e2b200442bbc2d2bd4eb540170045
Reviewed-on: https://gerrit.libreoffice.org/16761Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

external/libxslt/UnpackedTarball_xslt.mk

@@ -21,6 +21,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,xslt,\
 	$(if $(filter ANDROID,$(OS)),external/libxslt/libxslt-android.patch) \
 	external/libxslt/libxslt-config-guess.patch.0 \
 	external/libxslt/rpath.patch.0 \
+	external/libxslt/libxslt-vc15.patch \
 ))
 
 # vim: set noet sw=4 ts=4:

external/libxslt/libxslt-vc15.patch

+diff -ur xslt.org/libxslt/win32config.h xslt/libxslt/win32config.h
+--- misc/xslt/libxslt/win32config.h	2015-07-04 22:36:52.522061462 +0200
++++ misc/xslt/libxslt/win32config.h	2015-07-04 22:37:33.023064181 +0200
+@@ -79,7 +79,9 @@
+ #include <direct.h>
+ #if defined(_MSC_VER) || defined(__MINGW32__)
+ #define mkdir(p,m) _mkdir(p)
++#if _MSC_VER < 1900
+ #define snprintf _snprintf
++#endif
+ #if _MSC_VER < 1500
+ #define vsnprintf(b,c,f,a) _vsnprintf(b,c,f,a)
+ #endif