fix uninitialized value

ext/standard/crypt_freesec.c

@@ -580,7 +580,7 @@ static int
 des_cipher(const char *in, char *out, uint32_t salt, int count,
 	struct php_crypt_extended_data *data)
 {
-	uint32_t	l_out, r_out, rawl, rawr;
+	uint32_t	l_out = 0, r_out = 0, rawl, rawr;
 	int	retval;
 
 	setup_salt(salt, data);