common.c: Include the header file for ioctl()

darcs-hash:20051128144202-35ec8-5148e095c81538cb26c232e93dbe94a93e75e253.gz

common.c

@@ -13,6 +13,7 @@ parts of fish.
 #include <stdio.h>
 #include <dirent.h>
 #include <sys/types.h>
+#include <sys/ioctl.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <wctype.h>