Use gcc -ansi -pedantic in 9c.  Fix many non-C89-isms.
diff --git a/src/libdisk/scsi.c b/src/libdisk/scsi.c
index ccab244..3f35105 100644
--- a/src/libdisk/scsi.c
+++ b/src/libdisk/scsi.c
@@ -264,8 +264,8 @@
 	if(scsiverbose)
 		fprint(2, "scsi cmd #%.2ux: %.2ux %.2ux %.2ux: %s\n", cmd[0], key, code, sense[13], p);
 
-//	if(key == 0)
-//		return dcount;
+/*	if(key == 0) */
+/*		return dcount; */
 	return -1;
 }