[gtksourceview] language: fix Coverity defect

[Sébastien Wilmet <swilmet src gnome org>]

commit 4bef25165be650868af6a365243bffb74e256e3d
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Jan 22 11:44:43 2017 +0100

    language: fix Coverity defect
    
    In practice, I'm not sure that fd can be leaked in that code path, but
    in theory it can happen, so handle the case.

 gtksourceview/gtksourcelanguage.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcelanguage.c b/gtksourceview/gtksourcelanguage.c
index 15cfc44..10a8431 100644
--- a/gtksourceview/gtksourcelanguage.c
+++ b/gtksourceview/gtksourcelanguage.c
@@ -123,8 +123,12 @@ _gtk_source_language_new_from_file (const gchar              *filename,
         }
        else
        {
-               g_warning("Unable to open '%s'", filename);
+               g_warning ("Unable to open '%s'", filename);
 
+               if (fd != -1)
+               {
+                       close (fd);
+               }
        }
 
        if (lang != NULL)