clientsession_fuzzer: fix build

Change-Id: If793ad5d23f5b33d92ccfb681b279821f04a362b
Reviewed-on: https://gerrit.libreoffice.org/c/online/+/92397
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

fuzzer/ClientSession.cpp

@@ -35,7 +35,7 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
     }
 
     // Make sure SocketPoll::_newCallbacks does not grow forever, leading to OOM.
-    Admin::instance().poll(SocketPoll::DefaultPollTimeoutMs);
+    Admin::instance().poll(SocketPoll::DefaultPollTimeoutMicroS);
     return 0;
 }