[gimp] plug-ins: add missing define G_LOG_DOMAIN in file-psd for the meson build.

[Jacob Boerema <jboerema src gnome org>]

commit 0d7c26f129be5813c7e2549b3a8fe84fa0dd0d95
Author: Jacob Boerema <jgboerema gmail com>
Date:   Fri Dec 18 13:55:44 2020 -0500

    plug-ins: add missing define G_LOG_DOMAIN in file-psd for the meson build.

 plug-ins/file-psd/meson.build | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/plug-ins/file-psd/meson.build b/plug-ins/file-psd/meson.build
index 0796b6b323..9e13114c1b 100644
--- a/plug-ins/file-psd/meson.build
+++ b/plug-ins/file-psd/meson.build
@@ -26,6 +26,7 @@ endif
 
 executable(plugin_name,
   plugin_sources,
+  c_args: '-DG_LOG_DOMAIN="file-psd"',
   dependencies: [
     libgimpui_dep,
     libjpeg,