[gitg] Log error on gravatar image retrieve

[Alberto Fanjul <albfan src gnome org>]

commit 0340864a1b605208be4010b3a8ee41bf4cc96c06
Author: Gaurav Agrawal <agrawalgaurav1999 gmail com>
Date:   Mon Apr 29 23:01:44 2019 +0530

    Log error on gravatar image retrieve
    
    gravatar is retrieved using http get operation, log error if it fails

 libgitg/gitg-avatar-cache.vala | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/libgitg/gitg-avatar-cache.vala b/libgitg/gitg-avatar-cache.vala
index e0356176..56ac1f4a 100644
--- a/libgitg/gitg-avatar-cache.vala
+++ b/libgitg/gitg-avatar-cache.vala
@@ -73,8 +73,9 @@ public class Gitg.AvatarCache : Object
                {
                        stream = yield Gitg.PlatformSupport.http_get(file, cancellable);
                }
-               catch
+               catch(Error e)
                {
+                       warning("Can not retrieve avatar from %s: %s", file.get_path(), e.message);
                        return null;
                }