composite: fix duplicate typedef of ScreenPtr
fix warning on duplicate typedef:
../composite/compositeext_priv.h:11:25: warning: redefinition of typedef 'ScreenPtr' is a C11 feature [-Wtypedef-redefinition]
typedef struct _Screen *ScreenPtr;
^
../include/screenint.h:55:25: note: previous definition is here
typedef struct _Screen *ScreenPtr;
^
Signed-off-by: Enrico Weigelt, metux IT consult info@metux.net
Edited by Alan Coopersmith