[cogl] Don't typedef CoglMemoryStack twice

[Neil Roberts <nroberts src gnome org>]

commit 75cd425a48e0fc403bf88eace212a6d37b65df11
Author: Neil Roberts <neil linux intel com>
Date:   Mon Apr 30 12:05:17 2012 +0100

    Don't typedef CoglMemoryStack twice
    
    CoglMemoryStack was being typedef'd twice, once in the private header
    as an incomplete struct and once in the C source with the actual
    struct definition. This removes the second typedef so that it just
    defines the struct.
    
    This patch was written by Jack River.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=675119
    
    Reviewed-by: Neil Roberts <neil linux intel com>

 cogl/cogl-memory-stack.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/cogl/cogl-memory-stack.c b/cogl/cogl-memory-stack.c
index 5a939ec..826a892 100644
--- a/cogl/cogl-memory-stack.c
+++ b/cogl/cogl-memory-stack.c
@@ -70,13 +70,13 @@ struct _CoglMemorySubStack
   uint8_t *data;
 };
 
-typedef struct _CoglMemoryStack
+struct _CoglMemoryStack
 {
   CoglMemorySubStackList sub_stacks;
 
   CoglMemorySubStack *sub_stack;
   size_t sub_stack_offset;
-} CoglMemoryStack;
+};
 
 static CoglMemorySubStack *
 _cogl_memory_sub_stack_alloc (size_t bytes)