avoid compiler warning on at least some linux versions

diff --git a/libs/backends/alsa/alsa_sequencer.cc b/libs/backends/alsa/alsa_sequencer.cc
index 036ea5abc6961819d2ba0d3a8f9a5fa98ab6d503..ae0ccf94d2b507336e104580183f9aaa32ed2596 100644 (file)
--- a/libs/backends/alsa/alsa_sequencer.cc
+++ b/libs/backends/alsa/alsa_sequencer.cc
@@ -257,7 +257,11 @@ AlsaSeqMidiIn::main_process_thread ()
                uint64_t time = g_get_monotonic_time();
                ssize_t err = snd_seq_event_input (_seq, &event);
 
+#if EAGAIN == EWOULDBLOCK
+               if (err == -EAGAIN) {
+#else
                if ((err == -EAGAIN) || (err == -EWOULDBLOCK)) {
+#endif
                        do_poll = true;
                        continue;
                }