Fix #64032: mysqli reports different client_version

While `mysqli_get_client_version()` calls `mysql_get_client_version()`
to retrieve the client version, `mysql::$client_version` is initialized
to `MYSQL_VERSION_ID`.  Both should match though, and since the former
is the more useful information, we fix `mysql::$client_version`.

We do not add a regression test, because it would usually succeed
anyway, and we already have several tests with respective `assert()`s.

Author: cmb69

NEWS

@@ -20,6 +20,9 @@ PHP                                                                        NEWS
     cmb)
   . Fixed bug #79271 (DOMDocumentType::$childNodes is NULL). (cmb)
 
+- MySQLi:
+  . Fixed bug #64032 (mysqli reports different client_version). (cmb)
+
 - PCRE:
   . Fixed bug #79188 (Memory corruption in preg_replace/preg_replace_callback
     and unicode). (Nikita)

ext/mysqli/mysqli_driver.c

@@ -96,7 +96,7 @@ static zval *driver_embedded_read(mysqli_object *obj, zval *retval)
 /* {{{ property driver_client_version_read */
 static zval *driver_client_version_read(mysqli_object *obj, zval *retval)
 {
-	ZVAL_LONG(retval, MYSQL_VERSION_ID);
+	ZVAL_LONG(retval, mysql_get_client_version());
 	return retval;
 }
 /* }}} */