Adding a missing library and correct deprecation warning

[TheWitness]

Correcting two minor issues.

1. Boost failed due to missing lib/rrd.php
2. Add class variable to remove deprecation warnings in the snmp2c class

[Copilot]

Pull request overview

This PR attempts to fix two issues: adding a missing library include for Boost support and correcting a PHP 8.1+ deprecation warning related to dynamic properties. The first change adds the necessary include for lib/rrd.php which contains the rrdtool_function_fetch() function used when Boost is enabled. However, the second change has a critical issue - the down_cache variable declaration is added to the wrong class.

Changes:

• Added include for lib/rrd.php to support Boost functionality
• Added down_cache variable declaration (but to the wrong class - critical issue)
• Minor code style fix for spacing in conditional statement

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
weathermap-cacti-rebuild.php	Adds include_once for lib/rrd.php to support rrdtool_function_fetch() calls when Boost is enabled
lib/WeatherMap.class.php	Adds down_cache variable declaration to WeatherMap class (incorrect - should be in WeatherMapDataSource_snmp2c) and minor spacing fix

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[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.

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