Don't typedef CoglMemoryStack twice
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 <822ec91a7ef82248fd36162ca8ac3283eba70848@linux.intel.com>

gcampax/cogl,djdeath/cogl-android,djdeath/cogl,gcampax/cogl,djdeath/cogl,gcampax/cogl,djdeath/cogl-android,djdeath/cogl,djdeath/cogl-android,gcampax/cogl