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gefs: remove broken dead code in freepath

--- a/sys/src/cmd/gefs/tree.c

+++ b/sys/src/cmd/gefs/tree.c

@@ -19,7 +19,6 @@

 	/* Flowing up from flush */

 	int	op;	/* change done along path */

-	Blk	*m;	/* node merged against, for post-update free */

 	Blk	*nl;	/* new left */

 	Blk	*nr;	/* new right, if we split or rotated */

 	int	midx;	/* modification index */

@@ -1136,8 +1135,6 @@

 	for(p = path; p != path + npath; p++){

 		if(ok && p->b != nil)

-			freeblk(t, p->b);

-		if(ok && p->m != nil)

 			freeblk(t, p->b);

 		dropblk(p->b);

 		dropblk(p->nl);

-- 

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