Marc-Aurel Zent : iphlpapi: Return FALSE for bad handles in IcmpCloseHandle.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5de03757f7d5f0cbdbbee079f6b0f548d0ad2626
URL:    https://gitlab.winehq.org/wine/wine/-/commit/5de03757f7d5f0cbdbbee079f6b0f54...

Author: Marc-Aurel Zent <marc_aurel(a)me.com>
Date:   Sun Mar 26 13:31:14 2023 +0200

iphlpapi: Return FALSE for bad handles in IcmpCloseHandle.

---

 dlls/iphlpapi/iphlpapi_main.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dlls/iphlpapi/iphlpapi_main.c b/dlls/iphlpapi/iphlpapi_main.c
index 6286c168277..4afe3470630 100644
--- a/dlls/iphlpapi/iphlpapi_main.c
+++ b/dlls/iphlpapi/iphlpapi_main.c
@@ -4565,7 +4565,12 @@ struct icmp_handle_data
  */
 BOOL WINAPI IcmpCloseHandle( HANDLE handle )
 {
-    struct icmp_handle_data *data = (struct icmp_handle_data *)handle;
+    struct icmp_handle_data *data;
+
+    if (handle == NULL || handle == INVALID_HANDLE_VALUE)
+        return FALSE;
+
+    data = (struct icmp_handle_data *)handle;
 
     CloseHandle( data->nsi_device );
     heap_free( data );