wmp: Mark internal symbols with hidden visibility.

[Francois Gouget]

---
 dlls/wmp/wmp_private.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/wmp/wmp_private.h b/dlls/wmp/wmp_private.h
index f022ea4..91e8465 100644
--- a/dlls/wmp/wmp_private.h
+++ b/dlls/wmp/wmp_private.h
@@ -44,7 +44,7 @@ HRESULT WINAPI WMPFactory_CreateInstance(IClassFactory*,IUnknown*,REFIID,void**)
 
 void unregister_wmp_class(void) DECLSPEC_HIDDEN;
 
-extern HINSTANCE wmp_instance;
+extern HINSTANCE wmp_instance DECLSPEC_HIDDEN;
 
 static inline void *heap_alloc(size_t len)
 {
-- 
2.1.4