ACPICA: Debugger: remove redundant assignment on obj_desc

ACPICA commit f530f1acb3128136ad97c715fdaebbbeff283ee2

Pointer obj_desc is being initialized with a value that is never
read and it is being updated later with a new value. The initialization
is redundant and can be removed.

Addresses-Coverity: ("Unused value")

Link: https://github.com/acpica/acpica/commit/f530f1ac
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/acpica/dbobject.c

@@ -394,7 +394,6 @@ void acpi_db_decode_locals(struct acpi_walk_state *walk_state)
 	u8 display_locals = FALSE;
 
 	node = walk_state->method_node;
-	obj_desc = walk_state->method_desc;
 
 	/* There are no locals for the module-level code case */