rpcrt4: Hold the thread-data's critical section while cancelling a call.

Check that there is a connection before trying to cancel it.

rpcrt4: Hold the thread-data's critical section while cancelling a call.
8a15423a · Rob Shearman · Alexandre Julliard · 23e995e3 · 8a15423a
Commit 8a15423a authored Nov 18, 2007 by Rob Shearman Committed by Alexandre Julliard Nov 19, 2007
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rpcrt4_main.c dlls/rpcrt4/rpcrt4_main.c +3 -1

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--- a/dlls/rpcrt4/rpcrt4_main.c
+++ b/dlls/rpcrt4/rpcrt4_main.c
@@ -926,7 +926,9 @@ RPC_STATUS RPC_ENTRY RpcCancelThread(void* ThreadHandle)
    LIST_FOR_EACH_ENTRY(tdata, &threaddata_list, struct threaddata, entry)
        if (tdata->thread_id == target_tid)
        {
-            rpcrt4_conn_cancel_call(tdata->connection);
+            EnterCriticalSection(&tdata->cs);
+            if (tdata->connection) rpcrt4_conn_cancel_call(tdata->connection);
+            LeaveCriticalSection(&tdata->cs);
            break;
        }
    LeaveCriticalSection(&threaddata_cs);