qga: Fix handle fd leak in acquire_privilege()

token should be closed in all conditions.
So move CloseHandle(token) to "out" branch.

Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

qga/commands-win32.c

@@ -31,7 +31,7 @@
 
 static void acquire_privilege(const char *name, Error **errp)
 {
-    HANDLE token;
+    HANDLE token = NULL;
     TOKEN_PRIVILEGES priv;
     Error *local_err = NULL;
 
@@ -53,13 +53,15 @@ static void acquire_privilege(const char *name, Error **errp)
             goto out;
         }
 
-        CloseHandle(token);
     } else {
         error_set(&local_err, QERR_QGA_COMMAND_FAILED,
                   "failed to open privilege token");
     }
 
 out:
+    if (token) {
+        CloseHandle(token);
+    }
     if (local_err) {
         error_propagate(errp, local_err);
     }