Libxml2: Fix compilation on VS 2015

Change-Id: Ia2bb2897bc3fdb04c89f3328718f32fecd30eb64
Reviewed-on: https://gerrit.libreoffice.org/16760Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>

external/libxml2/UnpackedTarball_xml2.mk

@@ -19,6 +19,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,xml2,\
 	$(if $(filter ANDROID,$(OS)),external/libxml2/libxml2-android.patch) \
 	external/libxml2/libxml2-icu.patch.0 \
 	external/libxml2/ubsan.patch.0 \
+	external/libxml2/libxml2-vc15.patch \
 ))
 
 # vim: set noet sw=4 ts=4:

external/libxml2/libxml2-vc15.patch

+diff -ur xml2.org/include/win32config.h xml2/include/win32config.h
+--- misc/xml2/include/win32config.h	2015-07-04 21:35:50.600013534 +0200
++++ misc/xml2/include/win32config.h	2015-07-04 21:36:12.455015001 +0200
+@@ -95,7 +95,9 @@
+ 
+ #if defined(_MSC_VER)
+ #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