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cwfs: fix compiler warning

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

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

@@ -752,12 +752,10 @@

 int

-cwgrow(Device *dev, Superb *sb, int uid)

+cwgrow(Device *dev, Superb *sb, int)

 {

-	char str[NAMELEN];

 	Iobuf *cb;

 	Cache *h;

-	Filsys *filsys;

 	Off fs, nfs, ws;

 	cb = getbuf(CDEV(dev), CACHE_ADDR, Brd|Bmod|Bres);

@@ -773,16 +771,6 @@

 	putbuf(cb);

 	sb->fsize = nfs;

-	filsys = dev2fs(dev);

-/*

-	if (filsys == nil)

-		print("%Z", dev);

-	else

-		print("%s", filsys->name);

-	uidtostr(str, uid, 1);

-	print(" grow from %lld to %lld limit %lld by %s uid=%d\n",

-		(Wideoff)fs, (Wideoff)nfs, (Wideoff)ws, str, uid);

-*/

 	for(nfs--; nfs>=fs; nfs--)

 		switch(cwio(dev, nfs, 0, Ogrow)) {

 		case Cerror:

-- 

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