Broken error messages caused by #45

[bogdandrutu]

See open-telemetry/opentelemetry-collector#11427, I had to do this to be able to upgrade to v2.2.1.

This is most likely caused by b0e65b3#diff-7276b880a688d3af79f0a7b18e13df164968ac39766a475f3c91f9c445558e8fR803

/cc @yurishkuro

[sagikazarmark]

@yurishkuro looking at that change, I'm not quite sure why it's necessary. Can you clarify? Is it because of the nil value use case?

[yurishkuro]

yes, the original error message did not work under all conditions (it would panic)