sysctl.c: remove unused variable

Remoce the unused variable 'val' from __do_proc_dointvec()

The integer has been declared and used as 'val = -val' and there is no
reference to it anywhere.
Signed-off-by: Sukanto Ghosh <sukanto.cse.iitb@gmail.com>
Cc: Jaswinder Singh Rajput <jaswinder@kernel.org>
Cc: Sukanto Ghosh <sukanto.cse.iitb@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

kernel/sysctl.c

@@ -2283,7 +2283,7 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
 		  void *data)
 {
 #define TMPBUFLEN 21
-	int *i, vleft, first=1, neg, val;
+	int *i, vleft, first = 1, neg;
 	unsigned long lval;
 	size_t left, len;
 	
@@ -2336,8 +2336,6 @@ static int __do_proc_dointvec(void *tbl_data, struct ctl_table *table,
 			len = p-buf;
 			if ((len < left) && *p && !isspace(*p))
 				break;
-			if (neg)
-				val = -val;
 			s += len;
 			left -= len;