present: need to include <X11/Xfuncproto.h>

Some headers making use of X_EXPORT macro, so Xfuncproto.h should be
included explicitly, instead of silently relying any other include
already doing that.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1813>

present/present.h

@@ -23,7 +23,9 @@
 #ifndef _PRESENT_H_
 #define _PRESENT_H_
 
+#include <X11/Xfuncproto.h>
 #include <X11/extensions/presentproto.h>
+
 #include "randrstr.h"
 #include "presentext.h"
 

present/presentext.h

@@ -23,7 +23,8 @@
 #ifndef _PRESENTEXT_H_
 #define _PRESENTEXT_H_
 
-extern _X_EXPORT void
-present_extension_init(void);
+#include <X11/Xfuncproto.h>
+
+_X_EXPORT void present_extension_init(void);
 
 #endif /* _PRESENTEXT_H_ */