fs/reiserfs/stree.c: remove set but not used variables

Fixes gcc '-Wunused-but-set-variable' warning:

fs/reiserfs/stree.c: In function search_by_key:
fs/reiserfs/stree.c:596:6: warning: variable right_neighbor_of_leaf_node set but not used [-Wunused-but-set-variable]

Link: http://lkml.kernel.org/r/1566379929-118398-3-git-send-email-zhengbin13@huawei.comSigned-off-by: zhengbin <zhengbin13@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/reiserfs/stree.c

@@ -593,7 +593,6 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key,
 	struct buffer_head *bh;
 	struct path_element *last_element;
 	int node_level, retval;
-	int right_neighbor_of_leaf_node;
 	int fs_gen;
 	struct buffer_head *reada_bh[SEARCH_BY_KEY_READA];
 	b_blocknr_t reada_blocks[SEARCH_BY_KEY_READA];
@@ -614,8 +613,6 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key,
 
 	pathrelse(search_path);
 
-	right_neighbor_of_leaf_node = 0;
-
 	/*
 	 * With each iteration of this loop we search through the items in the
 	 * current node, and calculate the next current node(next path element)
@@ -701,7 +698,6 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key,
 			 */
 			block_number = SB_ROOT_BLOCK(sb);
 			expected_level = -1;
-			right_neighbor_of_leaf_node = 0;
 
 			/* repeat search from the root */
 			continue;