shell32: Create Microsoft\Windows\Themes directory during prefix creation.

dlls/shell32/shellpath.c

@@ -857,6 +857,7 @@ static const WCHAR Microsoft_Windows_Start_Menu_Admin_ToolsW[] = {'M','i','c','r
 static const WCHAR Microsoft_Windows_Start_Menu_StartupW[] = {'M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\','S','t','a','r','t',' ','M','e','n','u','\\','P','r','o','g','r','a','m','s','\\','S','t','a','r','t','U','p','\0'};
 static const WCHAR Microsoft_Windows_TemplatesW[] = {'M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\','T','e','m','p','l','a','t','e','s',0};
 static const WCHAR Microsoft_Windows_Temporary_Internet_FilesW[] = {'M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\','T','e','m','p','o','r','a','r','y',' ','I','n','t','e','r','n','e','t',' ','F','i','l','e','s',0};
+static const WCHAR Microsoft_Windows_ThemesW[] =  {'M','i','c','r','o','s','o','f','t','\\','W','i','n','d','o','w','s','\\','T','h','e','m','e','s',0};
 static const WCHAR MoviesW[] = {'M','o','v','i','e','s','\0'};
 static const WCHAR MusicW[] = {'M','u','s','i','c','\0'};
 static const WCHAR MusicLibraryW[] = {'M','u','s','i','c','L','i','b','r','a','r','y',0};
@@ -4612,6 +4613,11 @@ static HRESULT create_extra_folders(void)
         hr = SHGetFolderPathAndSubDirW( 0, CSIDL_COMMON_APPDATA | CSIDL_FLAG_CREATE, NULL,
                                         SHGFP_TYPE_DEFAULT, microsoftW, path );
     }
+    if (SUCCEEDED(hr))
+    {
+        hr = SHGetFolderPathAndSubDirW(0, CSIDL_APPDATA | CSIDL_FLAG_CREATE, NULL,
+                                       SHGFP_TYPE_DEFAULT, Microsoft_Windows_ThemesW, path);
+    }
     return hr;
 }