xfree86: os-support: unexport xf86RemoveSIGIOHandler

It's not used by any driver, so no need to export it.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1456>

hw/xfree86/dri/dri.c

@@ -68,6 +68,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "dristruct.h"
 #include "mi.h"
 #include "mipointer.h"
+#include "xf86_os_support.h"
 #include "xf86_OSproc.h"
 #include "inputstr.h"
 #include "xf86VGAarbiter.h"

hw/xfree86/os-support/shared/sigio.c

@@ -65,6 +65,7 @@
 #include <xserver_poll.h>
 #include "xf86.h"
 #include "xf86Priv.h"
+#include "xf86_os_support.h"
 #include "xf86_OSlib.h"
 #include "inputstr.h"
 

hw/xfree86/os-support/shared/sigiostubs.c

@@ -30,8 +30,10 @@
 #endif
 
 #include <X11/X.h>
+
 #include "xf86.h"
 #include "xf86Priv.h"
+#include "xf86_os_support.h"
 #include "xf86_OSlib.h"
 
 int

hw/xfree86/os-support/xf86_OSproc.h

@@ -162,7 +162,6 @@ extern _X_EXPORT Bool xf86GARTCloseScreen(int screenNum);
    wrappers than to wrap each individual function called. */
 extern _X_EXPORT int xf86InstallSIGIOHandler(int fd, void (*f) (int, void *),
                                              void *);
-extern _X_EXPORT int xf86RemoveSIGIOHandler(int fd);
 
 #ifdef XSERVER_PLATFORM_BUS
 #include "hotplug.h"

hw/xfree86/os-support/xf86_os_support.h

@@ -27,5 +27,6 @@ void xf86InitVidMem(void);
 void xf86OSRingBell(int volume, int pitch, int duration);
 void xf86OSInputThreadInit(void);
 Bool xf86DeallocateGARTMemory(int screenNum, int key);
+int xf86RemoveSIGIOHandler(int fd);
 
 #endif /* _XSERVER_XF86_OS_SUPPORT */