[gnome-photos/gnome-3-24] Update libgd

[Debarshi Ray <debarshir src gnome org>]

commit 43191952be99ce29e482d39cbc5dd7513db991e5
Author: Debarshi Ray <debarshir gnome org>
Date:   Fri Aug 18 13:08:04 2017 +0200

    Update libgd
    
    It has been switched to track the gnome-photos-3-24 branch, which has
    a more conservative set of patches suitable for stable releases. For
    example, gd_entry_focus_hack is still there so there is no need to port
    away from it.
    
    Silences deprecation warnings from gtk_paint_spinner, -Wparentheses,
    and -Wunused-variable; new test case for GdTaggedEntry; G_LOG_DOMAIN
    conflicts; and GdMainIconBoxChild fixes needed for showing names of
    collections.

 .gitmodules |    1 +
 libgd       |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/.gitmodules b/.gitmodules
index bfd964e..57492f7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,4 @@
 [submodule "libgd"]
        path = libgd
        url = git://git.gnome.org/libgd
+       branch = gnome-photos-3-24
diff --git a/libgd b/libgd
index cc90107..b3ad440 160000
--- a/libgd
+++ b/libgd
@@ -1 +1 @@
-Subproject commit cc90107531640bcba6c3c58e5cf6aec94d498763
+Subproject commit b3ad440290187fc5c2ffb7d201682cfc20589277