Blame coin-or-OS-except.patch

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--- OS-2.10.2/src/OSSolverInterfaces/OSCoinSolver.cpp.orig	2017-12-08 06:52:50.000000000 -0700
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+++ OS-2.10.2/src/OSSolverInterfaces/OSCoinSolver.cpp	2019-06-24 14:15:02.364623753 -0600
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@@ -1238,7 +1238,7 @@ void CoinSolver::solve() throw (ErrorCla
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             }
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         }
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-        catch(CoinError e)
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+        catch(CoinError& e)
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         {
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             std::string errmsg;
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             errmsg = "Coin Solver Error: " + e.message() + "\n" + " see method "