vlc_fs: make the internal vlc_DIR type private on Windows

include/vlc_fs.h

@@ -232,21 +232,7 @@ VLC_API FILE * vlc_fopen( const char *filename, const char *mode ) VLC_USED;
  */
 
 #if defined( _WIN32 )
-typedef struct vlc_DIR
-{
-    wchar_t *wildcard;
-    HANDLE fHandle;
-    WIN32_FIND_DATAW wdir;
-    bool eol;
-
-    char *entry;
-    union
-    {
-        DWORD drives;
-        bool insert_dot_dot;
-    } u;
-} vlc_DIR;
-
+typedef struct vlc_DIR vlc_DIR;
 #else // !_WIN32
 typedef DIR vlc_DIR;
 #endif

src/win32/filesystem.c

@@ -160,6 +160,21 @@ char *vlc_getcwd (void)
 #endif
 }
 
+struct vlc_DIR
+{
+    wchar_t *wildcard;
+    HANDLE fHandle;
+    WIN32_FIND_DATAW wdir;
+    bool eol;
+
+    char *entry;
+    union
+    {
+        DWORD drives;
+        bool insert_dot_dot;
+    } u;
+};
+
 /* Under Windows, these wrappers return the list of drive letters
  * when called with an empty argument or just '\'. */
 vlc_DIR *vlc_opendir (const char *dirname)