dccp: make the request_retries minimum is 1

In Documentation/networking/dccp.txt points that request_retries
should be greater than 0. So make the extra1 to be &one instead
of &zero.

Signed-off-by: Wang Weidong <[e-mail]>
Signed-off-by: Gerrit Renker <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/dccp/sysctl.c

···
 
 /* Boundary values */
 static int		zero     = 0,
+			one      = 1,
 			u8_max   = 0xFF;
 static unsigned long	seqw_min = DCCPF_SEQ_WMIN,
 			seqw_max = 0xFFFFFFFF;		/* maximum on 32 bit */
···
 		.maxlen		= sizeof(sysctl_dccp_request_retries),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= &zero,
+		.extra1		= &one,
 		.extra2		= &u8_max,
 	},
 	{