[gthumb] meson: fixed icons installation directory

[Paolo Bacchilega <paobac src gnome org>]

commit 6597aa7a381d3c6419ac0b0716e10488bebc4b03
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Oct 23 17:49:44 2017 +0200

    meson: fixed icons installation directory

 meson.build |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/meson.build b/meson.build
index a843ced..92dd030 100644
--- a/meson.build
+++ b/meson.build
@@ -37,7 +37,7 @@ pkglibdir = join_paths(prefix, 'lib', meson.project_name())
 po_dir = join_paths(meson.source_root(), 'po')
 extensions_install_dir = join_paths(pkglibdir, 'extensions')
 ui_install_dir = join_paths(pkgdatadir, 'ui')
-icons_install_dir = join_paths(pkgdatadir, 'icons')
+icons_install_dir = join_paths(datadir, 'icons')
 if get_option('run-in-place')
   ui_data_dir = join_paths(meson.source_root(), 'data', 'ui')
   icons_data_dir = join_paths(meson.source_root(), 'data', 'icons')