Fixed build warning for constexpr in amount.h for C++14
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Authored by jasonbcox on Jan 11 2018, 19:29.

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deadalnix

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Commits

rSTAGING7a7a215fbec3: Fixed build warning for constexpr in amount.h for C++14
rABC7a7a215fbec3: Fixed build warning for constexpr in amount.h for C++14

Summary

Ran into this warning while building on OSX:

../../src/amount.h:75:22: warning: 'constexpr' non-static member function will not be implicitly 'const' in C++14; add 'const' to avoid a change in behavior
      [-Wconstexpr-not-const]
    constexpr Amount operator-() { return Amount(-amount); }
                     ^
                                 const

It looks like the rest of the constexpr in this file are either friends or already have const applied.

Test Plan

make check