zenohd panics with plugins_loading/enabled:false

[fuzzypixelz]

Describe the bug

If the plugins_loading/enabled configuration option is set to false, then zenohd panics because the plugin loader is initialized with an empty search path:

zenoh/commons/zenoh-config/src/lib.rs

Lines 732 to 742 in b3e42ce

	pub fn libloader(&self) -> LibLoader {
	if self.plugins_loading.enabled {
	match self.plugins_loading.search_dirs() {
	Some(dirs) => LibLoader::new(dirs, true),
	None => LibLoader::default(),
	}
	} else {
	LibLoader::empty()
	}
	}
	}

Here is the error:

2024-07-10T08:42:14.363618Z  INFO main ThreadId(01) zenoh::api::loader: Loading required plugin "rest"
thread 'main' panicked at zenoh/src/api/loader.rs:64:17:
Plugin load failure: Library file 'libzenoh_plugin_rest.dylib' not found at commons/zenoh-util/src/lib_loader.rs:145.
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

To reproduce

1. cargo run --bin zenohd -- --cfg='plugins_loading/enabled:false'

System info

• ref: 9e1c4a8680a04b34f09dd2776d07958c8aae6f92