dix: unexport FreeColormap()

Not used by any driver/module, so no need to keep it exported.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1581>

dix/colormap_priv.h

@@ -5,6 +5,8 @@
 #ifndef _XSERVER_DIX_COLORMAP_PRIV_H
 #define _XSERVER_DIX_COLORMAP_PRIV_H
 
+#include <X11/Xdefs.h>
+
 #include "dix/screenint_priv.h"
 #include "include/colormap.h"
 
@@ -13,4 +15,7 @@ typedef struct _CMEntry *EntryPtr;
 int CreateColormap(Colormap mid, ScreenPtr pScreen, VisualPtr pVisual,
                    ColormapPtr *ppcmap, int alloc, int client);
 
+/* should only be called via resource type's destructor */
+int FreeColormap(void *pmap, XID mid);
+
 #endif /* _XSERVER_DIX_COLORMAP_PRIV_H */

dix/resource.c

@@ -123,6 +123,7 @@ Equipment Corporation.
 
 #include <X11/X.h>
 
+#include "dix/colormap_priv.h"
 #include "dix/gc_priv.h"
 #include "dix/registry_priv.h"
 #include "os/osdep.h"

include/colormap.h

@@ -74,9 +74,6 @@ typedef CARD32 Pixel;
 /* moved to screenint.h: typedef struct _ColormapRec *ColormapPtr */
 typedef struct _colorResource *colorResourcePtr;
 
-extern _X_EXPORT int FreeColormap(void *pmap,
-                                  XID mid);
-
 extern _X_EXPORT int TellLostMap(WindowPtr pwin,
                                  void *value);