bluetooth: Initialize conn to NULL for bt_conn_le_create()

After zephyrproject-rtos/zephyr#79856
a warning message is printed out if the connection object is not
initialized to NULL.

This commit addresses this by initialing it.

Signed-off-by: Rubin Gerritsen <[email protected]>
(cherry picked from commit 86f1953)

Author: rugeGerritsen

subsys/bluetooth/rpc/host/bt_rpc_conn_host.c

@@ -555,7 +555,7 @@ static void bt_conn_le_create_rpc_handler(const struct nrf_rpc_group *group,
 	const bt_addr_le_t *peer;
 	struct bt_conn_le_create_param create_param;
 	struct bt_le_conn_param conn_param;
-	struct bt_conn *conn_data;
+	struct bt_conn *conn_data = NULL;
 	struct bt_conn **conn = &conn_data;
 	size_t buffer_size_max = 8;
 

subsys/bluetooth/scan.c

@@ -483,7 +483,7 @@ static void scan_connect_with_target(struct bt_scan_control *control,
 	}
 
 	/* Establish connection. */
-	struct bt_conn *conn;
+	struct bt_conn *conn = NULL;
 
 	/* Stop scanning. */
 	bt_scan_stop();