[libgsystem] localalloc: Add gs_free_error

[Christian Persch <chpe src gnome org>]

commit 8ba987599ba6045dfe422e527d51aa3e090cd812
Author: Christian Persch <chpe gnome org>
Date:   Mon Oct 21 14:44:49 2013 +0200

    localalloc: Add gs_free_error

 gsystem-local-alloc.c |    6 ++++++
 gsystem-local-alloc.h |    8 ++++++++
 2 files changed, 14 insertions(+), 0 deletions(-)
---
diff --git a/gsystem-local-alloc.c b/gsystem-local-alloc.c
index fa4971d..3879b00 100644
--- a/gsystem-local-alloc.c
+++ b/gsystem-local-alloc.c
@@ -148,3 +148,9 @@ gs_local_strfreev (void *loc)
 {
   _gs_local_free(char **, g_strfreev);
 }
+
+void
+gs_local_free_error (void *loc)
+{
+  _gs_local_free(GError*, g_error_free);
+}
diff --git a/gsystem-local-alloc.h b/gsystem-local-alloc.h
index 4c63dcf..150748c 100644
--- a/gsystem-local-alloc.h
+++ b/gsystem-local-alloc.h
@@ -41,6 +41,7 @@ void gs_local_hashtable_unref (void *loc);
 void gs_local_checksum_free (void *loc);
 void gs_local_bytes_unref (void *loc);
 void gs_local_strfreev (void *loc);
+void gs_local_free_error (void *loc);
 
 /**
  * gs_free:
@@ -137,6 +138,13 @@ void gs_local_strfreev (void *loc);
  */
 #define gs_strfreev __attribute__ ((cleanup(gs_local_strfreev)))
 
+/**
+ * gs_free_error:
+ *
+ * Call g_error_free() on a variable location when it goes out of scope.
+ */
+#define gs_free_error __attribute__ ((cleanup(gs_local_free_error)))
+
 G_END_DECLS
 
 #endif