Chris Peterson 3e124aaca9 Bug 1663237 - Replace MOZ_MUST_USE with [[nodiscard]] in mozjemalloc. r=glandium
The MOZ_MUST_USE macro is defined as clang's and gcc's nonstandard __attribute__((warn_unused_result)). Now that we compile as C++17 by default (bug 1560664), we can replace MOZ_MUST_USE with C++17's standard [[nodiscard]] attribute.

We can also stop #including mozilla/Attributes.h because it was only needed for its MOZ_MUST_USE declaration.

Differential Revision: https://phabricator.services.mozilla.com/D89310
2020-09-08 07:20:19 +00:00
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