Fix liblangtag on MSVC 14.0

Change-Id: Ied20186f4863b49dba5d0c7ed98b3a297f3f2239
Reviewed-on: https://gerrit.libreoffice.org/16767Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Michael Stahl <mstahl@redhat.com>

external/liblangtag/UnpackedTarball_langtag.mk

@@ -15,10 +15,9 @@ $(eval $(call gb_UnpackedTarball_set_pre_action,langtag,\
 	$(GNUTAR) -x -j -f $(gb_UnpackedTarget_TARFILE_LOCATION)/$(LANGTAGREG_TARBALL) \
 ))
 
-# Currently no patches applied, if there were it would be:
-#$(eval $(call gb_UnpackedTarball_add_patches,langtag,\
-#	external/liblangtag/your-modification.patch \
-#))
+$(eval $(call gb_UnpackedTarball_add_patches,langtag,\
+	external/liblangtag/liblangtag-msvc.patch \
+))
 
 ifeq ($(OS),WNT)
 ifeq ($(COM),GCC)

external/liblangtag/liblangtag-msvc.patch

+--- foo/langtag.orig/configure	2015-06-26 10:53:36.000000000 +0200
++++ foo/langtag/configure	2015-09-03 08:16:58.672240500 +0200
+@@ -14786,8 +14786,7 @@
+   fi
+ 
+ 
+-if test "x$ac_cv_func_vsnprintf" = xyes; then
+-	{ $as_echo "$as_me:${as_lineno-$LINENO}: checking Whether vsnprintf is C99-compliant" >&5
++{ $as_echo "$as_me:${as_lineno-$LINENO}: checking Whether vsnprintf is C99-compliant" >&5
+ $as_echo_n "checking Whether vsnprintf is C99-compliant... " >&6; }
+ if ${lt_cv_c99_vsnprintf+:} false; then :
+   $as_echo_n "(cached) " >&6
+@@ -14798,7 +14797,10 @@
+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+ /* end confdefs.h.  */
+ 
++#include <sys/types.h>
++#include <stdio.h>
+ #include <stdarg.h>
++#include <stdlib.h>
+ int
+ foo(char *format, ...)
+ {
+@@ -14834,11 +14836,10 @@
+ fi
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_c99_vsnprintf" >&5
+ $as_echo "$lt_cv_c99_vsnprintf" >&6; }
+-	if test "x$lt_cv_c99_vsnprintf" = xyes; then
++if test "x$lt_cv_c99_vsnprintf" = xyes; then
+ 
+ $as_echo "#define LT_HAVE_C99_VSNPRINTF 1" >>confdefs.h
+ 
+-	fi
+ fi
+ 
+