From: David Wells <drwells@email.unc.edu>
Date: Thu, 8 Jul 2021 12:21:53 +0000 (-0400)
Subject: Merge pull request #12551 from bangerth/ref
X-Git-Tag: v9.4.0-rc1~1153
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80dcd67c5f88de341f8ab2f97bc28becdfd97e0c;p=dealii.git

Merge pull request #12551 from bangerth/ref

Don't use references where necessary.
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80dcd67c5f88de341f8ab2f97bc28becdfd97e0c