Scripts/Commands: Fix static analysis issues

src/server/scripts/Commands/cs_instance.cpp

@@ -308,6 +308,8 @@ public:
             return false;
         }
 
+        encounterId = atoi(param1);
+
         if (encounterId > map->ToInstanceMap()->GetInstanceScript()->GetEncounterCount())
         {
             handler->PSendSysMessage(LANG_BAD_VALUE);
@@ -315,8 +317,6 @@ public:
             return false;
         }
 
-        encounterId = atoi(param1);
-
         uint8 state = map->ToInstanceMap()->GetInstanceScript()->GetBossState(encounterId);
         handler->PSendSysMessage(LANG_COMMAND_INST_GET_BOSS_STATE, encounterId, state);
         return true;