winstore: gai_strerrorA is forbidden so use our version from compat

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

configure.ac

@@ -524,6 +524,7 @@ AS_IF([test "${SYS}" = "mingw32"],[
   AS_IF([test "${enable_winstore_app}" = "yes"], [
     vlc_winstore_app=1
      VLC_ADD_LIBS([libvlccore], [-lole32 -lruntimeobject])
+     AC_LIBOBJ([gai_strerror])
     ],[
      VLC_ADD_LIBS([libvlccore],[-lwinmm])
     ])

include/vlc_network.h

@@ -198,8 +198,10 @@ VLC_API ssize_t net_vaPrintf( vlc_object_t *p_this, int fd, const char *psz_fmt,
 #endif
 
 #ifdef _WIN32
-# undef gai_strerror
-# define gai_strerror gai_strerrorA
+# if !defined(WINAPI_FAMILY) || WINAPI_FAMILY != WINAPI_FAMILY_APP
+#  undef gai_strerror
+#  define gai_strerror gai_strerrorA
+# endif
 #endif
 
 #ifdef __OS2__