Make dtach -N return the exit status of the program

Also change the execvp error exit from 127 to 1 to be consistent between
dtach -n and dtach -N.

1 files changed, 1 insertions, 0 deletions

diff --git a/dtach.h b/dtach.h
index 40d0879..56867c8 100644
--- a/dtach.h
+++ b/dtach.h
@@ -83,6 +83,7 @@
 #include <sys/stat.h>
 #include <sys/socket.h>
 #include <sys/un.h>
+#include <sys/wait.h>
 
 #ifndef S_ISREG
 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)