Add a missing header include.

diff --git a/mach/proto/as/comm0.h b/mach/proto/as/comm0.h
index acda1e6..56c783a 100644 (file)
--- a/mach/proto/as/comm0.h
+++ b/mach/proto/as/comm0.h
@@ -89,6 +89,7 @@ _include      <unistd.h>
 #include       <stdio.h>
 #include    <string.h>
 #include       <stdarg.h>
+#include       <errno.h>
 #include       <ctype.h>
 #include       <signal.h>
 #include       <unistd.h>