mi: unexport miClearToBackground()

Not used by any drivers/modules, so no need to keep it public.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1727>

mi/mi.h

@@ -280,14 +280,6 @@ extern _X_EXPORT void miPolylines(DrawablePtr pDrawable,
 
 /* miwindow.c */
 
-extern _X_EXPORT void miClearToBackground(WindowPtr /*pWin */ ,
-                                          int /*x */ ,
-                                          int /*y */ ,
-                                          int /*w */ ,
-                                          int /*h */ ,
-                                          Bool  /*generateExposures */
-    );
-
 extern _X_EXPORT void miMarkWindow(WindowPtr    /*pWin */
     );
 

mi/mi_priv.h

@@ -53,4 +53,7 @@ int miShapedWindowIn(RegionPtr universe, RegionPtr bounding, BoxPtr rect,
                      int x, int y);
 int miValidateTree(WindowPtr pParent, WindowPtr pChild, VTKind kind);
 
+void miClearToBackground(WindowPtr pWin, int x, int y, int w, int h,
+                         Bool generateExposures);
+
 #endif /* _XSERVER_MI_PRIV_H */

mi/miwindow.c

@@ -51,10 +51,10 @@ SOFTWARE.
 
 #include "dix/cursor_priv.h"
 #include "dix/input_priv.h"
+#include "mi/mi_priv.h"
 
 #include "regionstr.h"
 #include "region.h"
-#include "mi.h"
 #include "windowstr.h"
 #include "scrnintstr.h"
 #include "pixmapstr.h"