Always include sys/time.h and sys/select.h from selectdispatcher.h.

fd_set used by this header is supposed to be defined in sys/select.h and not
including this header resulted in compilation problems under QNX. And
including sys/time.h shouldn't hurt and is needed by select() under many
systems anyhow.

See #11817.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63716 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/private/selectdispatcher.h

@@ -15,14 +15,17 @@
 
 #if wxUSE_SELECT_DISPATCHER
 
+#if defined(HAVE_SYS_SELECT_H) || defined(__WATCOMC__)
+    #include <sys/time.h>
+    #include <sys/select.h>
+#endif
+
 #ifdef __WATCOMC__
-  #include <types.h>
-  #include <sys/ioctl.h>
-  #include <sys/time.h>
-  #include <sys/select.h>
-  #include <tcpustd.h>
+    #include <types.h>
+    #include <sys/ioctl.h>
+    #include <tcpustd.h>
 #else
-  #include <sys/types.h>
+    #include <sys/types.h>
 #endif
 
 #include "wx/private/fdiodispatcher.h"