[PATCH] D53399: [clangd] Ensure that we reply to each call exactly once. NFC (I think!)

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added a reviewer: ioeric.
Herald added subscribers: cfe-commits, kadircet, jfb, arphaman, jkorous, MaskRay, ilya-biryukov.

In debug builds, getting this wrong will trigger asserts.
In production builds, it will send an error reply if none was sent,
and drop redundant replies. (And log).

No tests because this is always a programming error.
(We did have some cases of this, but I fixed them with the new dispatcher).


Repository:
  rCTE Clang Tools Extra

https://reviews.llvm.org/D53399

Files:
  clangd/ClangdLSPServer.cpp

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