NAND: Add missing declaration to non-redundant saveenv().

Signed-off-by: Scott Wood <scottwood@freescale.com>
diff --git a/common/env_nand.c b/common/env_nand.c
index a48e98e..e21d2a3 100644
--- a/common/env_nand.c
+++ b/common/env_nand.c
@@ -230,7 +230,8 @@
 {
 	size_t total;
 	int ret = 0;
-
+	nand_erase_options_t nand_erase_options;
+	
 	nand_erase_options.length = CFG_ENV_RANGE;
 	nand_erase_options.quiet = 0;
 	nand_erase_options.jffs2 = 0;