[geany/geany] 1e54fb: Alter warning fix

[Lex Trotman]

  Branch: refs/heads/master
  Home:   https://github.com/geany/geany

  Commit: 1e54fb6a015f02c5be2ab18faca7b2059ca0a114
      https://github.com/geany/geany/commit/1e54fb6a015f02c5be2ab18faca7b2059ca0a114
  Author: Lex Trotman <elextr at gmail.com>
  Date:   2011-11-06 (Sun, 06 Nov 2011)

  Changed paths:
    M src/dialogs.c

  Log Message:
  -----------
  Alter warning fix

Uninitialised GValue does not always work, but is an opaque type so
structure of initialiser isn't known.  Glib 2.30 on has G_VALUE_INIT
to use as initial value.  Fix so if not defined give it the previous literal
value { 0 }, although this leaves the warning, so it is not initialising
the GValue correctly but enough to work.