Allow clippy::map_unwrap_or.

Signed-off-by: Jason Volk <jason@zemos.net>

Cargo.toml

@@ -920,6 +920,7 @@ enum_glob_use = { level = "allow", priority = 1 }
 if_not_else = { level = "allow", priority = 1 }
 if_then_some_else_none = { level = "allow", priority = 1 }
 inline_always = { level = "allow", priority = 1 }
+map_unwrap_or = { level = "allow", priority = 1 }
 match_bool = { level = "allow", priority = 1 }
 missing_docs_in_private_items = { level = "allow", priority = 1 }
 missing_errors_doc = { level = "allow", priority = 1 }