staging: lustre: remove set but unused variables

Remove set but unused variables in nidstring.c
and osc_request.c as reported by make W=1.

Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8378
Reviewed-on: http://review.whamcloud.com/23221
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Emoly Liu <emoly.liu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lnet/lnet/nidstrings.c

@@ -247,10 +247,8 @@ parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist)
 {
 	struct cfs_lstr addrrange;
 	struct cfs_lstr net;
-	struct cfs_lstr tmp;
 	struct nidrange *nr;
 
-	tmp = *src;
 	if (!cfs_gettok(src, '@', &addrrange))
 		goto failed;
 

drivers/staging/lustre/lustre/osc/osc_request.c

@@ -933,7 +933,6 @@ static u32 osc_checksum_bulk(int nob, u32 pg_count,
 	int i = 0;
 	struct cfs_crypto_hash_desc *hdesc;
 	unsigned int bufsize;
-	int err;
 	unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
 
 	LASSERT(pg_count > 0);
@@ -975,7 +974,7 @@ static u32 osc_checksum_bulk(int nob, u32 pg_count,
 	}
 
 	bufsize = sizeof(cksum);
-	err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
+	cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
 
 	/* For sending we only compute the wrong checksum instead
 	 * of corrupting the data so it is still correct on a redo