From cf7f5cbfacbbca8e51fb915a4a86dcee5cf11b7b Mon Sep 17 00:00:00 2001
From: Nikita Popov <nikita.ppv@gmail.com>
Date: Thu, 15 Apr 2021 10:14:19 +0200
Subject: [PATCH] mysqlnd: Free empty param bind

Even if the param bind is empty, there might still be an allocation
for it that we need to free.
---
 ext/mysqlnd/mysqlnd_ps.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ext/mysqlnd/mysqlnd_ps.c b/ext/mysqlnd/mysqlnd_ps.c
index 66a60c4f950..d2f4013d27f 100644
--- a/ext/mysqlnd/mysqlnd_ps.c
+++ b/ext/mysqlnd/mysqlnd_ps.c
@@ -1173,6 +1173,8 @@ MYSQLND_METHOD(mysqlnd_stmt, bind_parameters)(MYSQLND_STMT * const s, MYSQLND_PA
 			}
 		}
 		stmt->send_types_to_server = 1;
+	} else if (param_bind && param_bind != stmt->param_bind) {
+		s->m->free_parameter_bind(s, param_bind);
 	}
 	DBG_INF("PASS");
 	DBG_RETURN(PASS);