hp_blade_blades.py: fix typing error

Change-Id: I5bedf26f3bfa8fd910ed1b0711d2f5e01d137de8

cmk/base/legacy_checks/hp_blade_blades.py

@@ -75,8 +75,7 @@ def check_hp_blade_blades(item, params, info):
             # Seems not to be implemented. The MIB file tells me that this value
             # should represent a state but is empty. So set it to "fake" OK and
             # display the other gathered information.
-            state = 2 if line[2] == "" else line[2]
-            state = saveint(state)
+            state = saveint(line[2] or "2")
 
             snmp_state = hp_blade_status_map[state]
             status = hp_blade_status2nagios_map[snmp_state]