shell32: Add a stub for LinkWindow_RegisterClass.

dlls/shell32/shell32.spec

@@ -210,6 +210,7 @@
  250 stdcall -noname PathRemoveExtension(ptr) PathRemoveExtensionAW
  251 stdcall -noname PathRemoveArgs(ptr) PathRemoveArgsAW
  256 stdcall @(ptr ptr) SHELL32_256
+ 258 stdcall -noname LinkWindow_RegisterClass()
 #299 stub Shl1632_ThunkData32
 #300 stub Shl3216_ThunkData32
 

dlls/shell32/shellord.c

@@ -1957,3 +1957,12 @@ HRESULT WINAPI SHSetLocalizedName(LPWSTR pszPath, LPCWSTR pszResModule, int idsR
 
     return S_OK;
 }
+
+/*************************************************************************
+ *              LinkWindow_RegisterClass (SHELL32.258)
+ */
+BOOL WINAPI LinkWindow_RegisterClass(void)
+{
+    FIXME("()\n");
+    return TRUE;
+}