make sure we do not retrieve/process mpd status multiple times

Jean-Francois Dockes Jean-Francois Dockes 2016-01-13

changed src/mpdcli.cxx
changed src/ohinfo.cxx
changed src/ohplaylist.cxx
changed src/ohproduct.cxx
changed src/ohradio.cxx
changed src/renderctl.cxx
changed src/upmpd.cxx
src/mpdcli.cxx Diff Switch to side-by-side view
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src/ohinfo.cxx Diff Switch to side-by-side view
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src/ohplaylist.cxx Diff Switch to side-by-side view
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src/ohproduct.cxx Diff Switch to side-by-side view
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src/ohradio.cxx Diff Switch to side-by-side view
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src/renderctl.cxx Diff Switch to side-by-side view
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src/upmpd.cxx Diff Switch to side-by-side view
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