common/cmd_flash.c: Fix GCC 4.6 build warnings

Fix:
cmd_flash.c:355:32: warning: 'info' may be used uninitialized in this
function [-Wuninitialized]
cmd_flash.c:354:10: warning: 'sect_first' may be used uninitialized in
this function [-Wuninitialized]
cmd_flash.c:354:10: warning: 'sect_last' may be used uninitialized in
this function [-Wuninitialized]
cmd_flash.c: In function 'do_protect':
cmd_flash.c:540:9: warning: 'info' may be used uninitialized in this
function [-Wuninitialized]
cmd_flash.c:538:9: warning: 'sect_first' may be used uninitialized in
this function [-Wuninitialized]
cmd_flash.c:538:9: warning: 'sect_last' may be used uninitialized in
this function [-Wuninitialized]

Signed-off-by: Wolfgang Denk <wd@denx.de>

common/cmd_flash.c

@@ -324,9 +324,9 @@ int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 #ifndef CONFIG_SYS_NO_FLASH
-	flash_info_t *info;
+	flash_info_t *info = NULL;
 	ulong bank, addr_first, addr_last;
-	int n, sect_first, sect_last;
+	int n, sect_first = 0, sect_last = 0;
 #if defined(CONFIG_CMD_MTDPARTS)
 	struct mtd_device *dev;
 	struct part_info *part;
@@ -457,9 +457,9 @@ int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	int rcode = 0;
 #ifndef CONFIG_SYS_NO_FLASH
-	flash_info_t *info;
+	flash_info_t *info = NULL;
 	ulong bank;
-	int i, n, sect_first, sect_last;
+	int i, n, sect_first = 0, sect_last = 0;
 #if defined(CONFIG_CMD_MTDPARTS)
 	struct mtd_device *dev;
 	struct part_info *part;