Avoid a warning shown since bumping Windows baseline

This is shown now, since commit b664c08a6d
(Drop support for Windows versions prior to Windows 10, 2024-12-07):

  Change your target platform to Windows 7 or below if your application
  requires backward compatibility for the ADO interface.

Change-Id: Ic95a0819440b958cc3e01bbc2ffe91d7495bb8fb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/178406
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

connectivity/CppunitTest_connectivity_ado.mk

@@ -28,6 +28,7 @@ $(eval $(call gb_CppunitTest_use_sdk_api,connectivity_ado))
 ifeq ($(COM),GCC)
 $(eval $(call gb_CppunitTest_add_cxxflags,connectivity_ado,\
 	-fpermissive \
+	-DADO_SUPPRESS_MESSAGE \
 ))
 endif
 

dbaccess/Library_dbu.mk

@@ -58,6 +58,12 @@ $(eval $(call gb_Library_use_libraries,dbu,\
     vcl \
 ))
 
+ifeq ($(COM),MSC)
+$(eval $(call gb_Library_add_cxxflags,dbu,\
+	-DADO_SUPPRESS_MESSAGE \
+))
+endif
+
 ifeq ($(OS),WNT)
 $(eval $(call gb_Library_use_system_win32_libs,dbu,\
     ole32 \