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sshnet: fix memory leak

--- a/sys/src/cmd/sshnet.c

+++ b/sys/src/cmd/sshnet.c

@@ -805,13 +805,11 @@

 			goto Badarg;

 		if(nf != 2)

 			goto Badarg;

+		free(c->connect);

 		c->connect = estrdup9p(f[1]);

 		nf = getfields(f[1], f, nelem(f), 0, "!");

-		if(nf != 2){

-			free(c->connect);

-			c->connect = nil;

+		if(nf != 2)

 			goto Badarg;

-		}

 		c->sendwin = MaxPacket;

 		c->recvwin = WinPackets * MaxPacket;

 		c->recvacc = 0;

-- 

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