Fix child_process.cc build failure for FreeBSD.

diff --git a/src/node_child_process.cc b/src/node_child_process.cc
index f490417..6c84514 100644 (file)
--- a/src/node_child_process.cc
+++ b/src/node_child_process.cc
@@ -9,6 +9,9 @@
 #include <unistd.h>
 #include <fcntl.h>
 #include <sys/types.h>
+#ifdef __FreeBSD__
+#include <sys/wait.h>
+#endif
 
 extern char **environ;