* event-loop.c: Include unistd.h if it exists.

gdb/gdbserver/ChangeLog

@@ -1,5 +1,7 @@
 2009-12-18  Doug Evans  <dje@google.com>
 
+	* event-loop.c: Include unistd.h if it exists.
+
 	* linux-low.c (my_waitpid): Move definition away from being in
 	between linux_tracefork_child/linux_test_for_tracefork.
 

gdb/gdbserver/event-loop.c

@@ -34,6 +34,10 @@
 #include <errno.h>
 #endif
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 typedef struct gdb_event gdb_event;
 typedef void (event_handler_func) (int);