windows: Add utils_init/deinit functions to initialize Winsock2

src/libstrongswan/utils/utils.c

@@ -47,6 +47,26 @@ ENUM(status_names, SUCCESS, NEED_MORE,
 	"NEED_MORE",
 );
 
+/**
+ * See header
+ */
+void utils_init()
+{
+#ifdef WIN32
+	windows_init();
+#endif /* WIN32 */
+}
+
+/**
+ * See header
+ */
+void utils_deinit()
+{
+#ifdef WIN32
+	windows_deinit();
+#endif /* WIN32 */
+}
+
 /**
  * Described in header.
  */