Merging r367687:

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r367687 | ibiryukov | 2019-08-02 17:23:04 +0200 (Fri, 02 Aug 2019) | 16 lines

[clangd] Fix a crash when presenting values for Hover

Summary:
We should pass the expression type, not a variable type when printing
the resulting value. Variable type may be different from what the
pretty-printing function expects, e.g. have references.

Reviewers: sammccall

Reviewed By: sammccall

Subscribers: MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65655
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llvm-svn: 367807