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cwfs: fix putbuf(nil) in error case of cmd_check()

--- a/sys/src/cmd/cwfs/chk.c

+++ b/sys/src/cmd/cwfs/chk.c

@@ -236,10 +236,9 @@

 	print("deepest recursion=%d\n", maxdepth-1);	/* one-origin */

 	if(!cwflag)

 		missing();

-

+	putbuf(p);

 out:

 	cons.noage = 0;

-	putbuf(p);

 	chkfree(name);

 	chkfree(abits);

 	chkfree(qbits);

-- 

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