winhttp: Release typeinfos and typelib on dll unload.

dlls/winhttp/main.c

@@ -48,6 +48,7 @@ BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
     case DLL_PROCESS_DETACH:
         if (lpv) break;
         netconn_unload();
+        release_typelib();
         break;
     }
     return TRUE;

dlls/winhttp/request.c

@@ -2758,6 +2758,18 @@ static HRESULT get_typeinfo( enum type_id tid, ITypeInfo **ret )
     return S_OK;
 }
 
+void release_typelib(void)
+{
+    unsigned i;
+
+    for (i = 0; i < sizeof(winhttp_typeinfo)/sizeof(*winhttp_typeinfo); i++)
+        if (winhttp_typeinfo[i])
+            ITypeInfo_Release(winhttp_typeinfo[i]);
+
+    if (winhttp_typelib)
+        ITypeLib_Release(winhttp_typelib);
+}
+
 static HRESULT WINAPI winhttp_request_GetTypeInfo(
     IWinHttpRequest *iface,
     UINT index,

dlls/winhttp/winhttp_private.h

@@ -283,6 +283,7 @@ BOOL set_server_for_hostname( connect_t *, LPCWSTR, INTERNET_PORT ) DECLSPEC_HID
 void destroy_authinfo( struct authinfo * ) DECLSPEC_HIDDEN;
 
 extern HRESULT WinHttpRequest_create( void ** ) DECLSPEC_HIDDEN;
+void release_typelib( void ) DECLSPEC_HIDDEN;
 
 static inline void *heap_alloc( SIZE_T size )
 {