bug#32808: 25.2; Indentation after initializer list C++

[richard <johndoe27328@gmail.com>]

While creating a constructor for my class, I have a multiline
initializer list. For the constructor, the indentation matches that of
the list. Here's an example:

Test::Test(const std::string &a) : a{a}, b{0},
			           c{"..."}, d{""} {
		/*notice the indentation*/					  }




In GNU Emacs 25.2.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.21)
 of 2017-09-22, modified by Debian built on lgw01-amd64-050
Windowing system distributor 'The X.Org Foundation', version 11.0.11905000
System Description:	Ubuntu 17.10

Configured using:
 'configure --build x86_64-linux-gnu --prefix=/usr
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 --localstatedir=/var/lib --infodir=/usr/share/info
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 --with-sound=alsa --without-gconf --build x86_64-linux-gnu
 --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
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 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.2/site-lisp:/usr/share/emacs/site-lisp
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Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: C++/l

Minor modes in effect:
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  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
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  auto-composition-mode: t
  auto-encryption-mode: t
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Recent messages:
Loading /usr/share/emacs25/site-lisp/haskell-mode/haskell-mode-autoloads.el (source)...done
Loading /etc/emacs/site-start.d/50haskell-mode.el (source)...done
Loading /etc/emacs/site-start.d/50irony-mode.el (source)...done
Loading /etc/emacs/site-start.d/50php-elisp.el (source)...done
Loading /etc/emacs/site-start.d/60agda-stdlib.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
funcall-interactively: Beginning of buffer
Mark set [4 times]
Auto-saving...done
Making completion list...

Load-path shadows:
/usr/share/emacs25/site-lisp/cmake-data/cmake-mode hides /usr/share/emacs/site-lisp/cmake-mode
/usr/share/emacs/25.2/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup

Features:
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env code-pages mule custom widget hashtable-print-readable backquote
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Memory information:
((conses 16 122586 4894)
 (symbols 48 23758 0)
 (miscs 40 66 229)
 (strings 32 25836 5164)
 (string-bytes 1 875386)
 (vectors 16 16999)
 (vector-slots 8 490112 3548)
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 (intervals 56 663 23)
 (buffers 976 19))