20253 innovaphone(licenses): fix lower boundary

The perfdata tuple only supplied 5 of its 6 positional fields
(name, value, warn, crit, min_), so total ended up in the min_ slot
while max_ silently defaulted to None. The used-licenses metric was
graphed with a lower boundary of total and no upper boundary at all,
instead of ranging from 0 to total.

CMK-37821

Change-Id: Ifdfb20ea33be326c5c41b0e2065ca11c01d8e456

Author: logan-connolly

.werks/20253.md

@@ -0,0 +1,19 @@
+[//]: # (werk v3)
+# innovaphone_licenses: fix metric lower boundary
+
+key        | value
+---------- | ---
+date       | 2026-08-06T18:57:02.124193+00:00
+version    | 2.5.0p12
+class      | fix
+edition    | community
+component  | checks
+level      | 1
+compatible | yes
+
+The _Licenses_ service on Innovaphone devices graphed the used-licenses metric
+with a lower boundary equal to the total license count and no upper boundary,
+instead of ranging from 0 to the total.
+
+The metric now correctly ranges from 0 to the total license count. This is only
+a graphing concern, so the metric history should not be affected.

cmk/base/legacy_checks/innovaphone_licenses.py

@@ -38,7 +38,7 @@ def check_innovaphone_licenses(_no_item, params, info):
     warn, crit = params["levels"]
     message = f"Used {used:.0f}/{total:.0f} Licences ({perc_used:.0f}%)"
     levels = f"Warning/ Critical at ({warn}/{crit})"
-    perf = [("licenses", used, None, None, total)]
+    perf = [("licenses", used, None, None, 0, total)]
     if perc_used > crit:
         return 2, message + levels, perf
     if perc_used > warn: