bean: MSVC: pragma warning: make more specific, remove obsolete

Change-Id: Id575db58199f438e95d9c73778cc520c452e1a42
Reviewed-on: https://gerrit.libreoffice.org/48948Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

bean/native/win32/com_sun_star_comp_beans_LocalOfficeWindow.c

@@ -17,19 +17,14 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#if defined _MSC_VER
-#pragma warning(push, 1)
-#endif
 #if !defined WIN32_LEAN_AND_MEAN
 # define WIN32_LEAN_AND_MEAN
 #endif
 #include <windows.h>
-#if defined _MSC_VER
-#pragma warning(pop)
-#endif
 
 #if defined _MSC_VER
-#pragma warning(push, 1)
+#pragma warning(push)
+#pragma warning(disable : 4201) /* nonstandard extension used: nameless struct/union */
 #endif
 #include <jawt_md.h>
 #if defined _MSC_VER