[PATCH 4/4] winetest: Check GetTokenInformation() return value.

[Serge Gautherie]

Signed-off-by: Serge Gautherie 
---
 programs/winetest/main.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/programs/winetest/main.c b/programs/winetest/main.c
index 1731850..df1b371 100644
--- a/programs/winetest/main.c
+++ b/programs/winetest/main.c
@@ -232,8 +232,12 @@ static int running_as_admin (void)
     }

/* Get the group info from the token */
-    groups_size = 0;
-    GetTokenInformation(token, TokenGroups, NULL, 0, &groups_size);
+    if (GetTokenInformation(token, TokenGroups, NULL, 0, &groups_size) ||
+        GetLastError() != ERROR_INSUFFICIENT_BUFFER)
+    {
+        FreeSid(administrators);
+        return -1;
+    }
     groups = heap_alloc(groups_size);
     if (groups == NULL)
     {