[gegl] json: Properly convert strings to lowercase

[Jon Nordby <jonnor src gnome org>]

commit 7d03738638f1f41b3e09236128e85aab2b7ebbcb
Author: Timm Bäder <mail baedert org>
Date:   Sun Apr 17 11:22:47 2016 +0200

    json: Properly convert strings to lowercase
    
    g_ascii_strdown returns a newly allocated string, so use the return
    value.

 operations/core/json.c |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/operations/core/json.c b/operations/core/json.c
index 759227d..1acd94b 100644
--- a/operations/core/json.c
+++ b/operations/core/json.c
@@ -97,9 +97,8 @@ component2geglop(const gchar *name) {
     if (!name) {
       return NULL;
     }
-    dup = g_strdup(name);
+    dup = g_ascii_strdown(name, -1);
     replace_char_inline(dup, '/', ':');
-    g_ascii_strdown(dup, -1);
     return dup;
 }
 
@@ -109,9 +108,8 @@ component2gtypename(const gchar *name) {
     if (!name) {
       return NULL;
     }
-    dup = g_strdup(name);
+    dup = g_ascii_strdown(name, -1);
     replace_char_inline(dup, '/', '_');
-    g_ascii_strdown(dup, -1);
     return dup;
 }
 
@@ -503,6 +501,7 @@ json_op_class_init (gpointer klass, gpointer class_data)
     "description",  (description) ? description : "",
     NULL);
 
+  g_free(name);
 }
 
 static void