xkb: unexport XkbRF_GetComponents()

Only used inside xkb/* - not used by any modules, so no need
to keep maintaining it in public headers.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1840>

include/xkbrules.h

@@ -80,14 +80,6 @@ typedef struct _XkbRF_Rules {
 
 _XFUNCPROTOBEGIN
 
-/* Seems preferable to dragging xkbstr.h in. */
-    struct _XkbComponentNames;
-
-extern _X_EXPORT Bool XkbRF_GetComponents(XkbRF_RulesPtr /* rules */ ,
-                                          XkbRF_VarDefsPtr /* var_defs */ ,
-                                          struct _XkbComponentNames *   /* names */
-    );
-
 extern _X_EXPORT Bool XkbRF_LoadRules(FILE * /* file */ ,
                                       XkbRF_RulesPtr    /* rules */
     );

xkb/ddxLoad.c

@@ -42,6 +42,7 @@ THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "os/osdep.h"
 #include "xkb/xkbfile_priv.h"
 #include "xkb/xkbfmisc_priv.h"
+#include "xkb/xkbrules_priv.h"
 
 #include "inputstr.h"
 #include "scrnintstr.h"

xkb/maprules.c

@@ -40,6 +40,9 @@
 #include <X11/Xfuncs.h>
 #include <X11/Xatom.h>
 #include <X11/keysym.h>
+
+#include "xkb/xkbrules_priv.h"
+
 #include "misc.h"
 #include "inputstr.h"
 #include "dix.h"

xkb/xkbrules_priv.h

@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: MIT OR X11
+ *
+ * Copyright © 2024 Enrico Weigelt, metux IT consult <info@metux.net>
+ */
+#ifndef _XSERVER_XKB_XKBRULES_PRIV_H
+#define _XSERVER_XKB_XKBRULES_PRIV_H
+
+#include <X11/Xdefs.h>
+
+#include "include/xkbrules.h"
+
+struct _XkbComponentNames;
+
+Bool XkbRF_GetComponents(XkbRF_RulesPtr rules,
+                         XkbRF_VarDefsPtr var_defs,
+                         struct _XkbComponentNames *names);
+
+#endif /* _XSERVER_XKB_XKBRULES_PRIV_H */