[Bug]: Incorrect error diagnostic message when return result is not defined for a worker that expects a return value

[Thushara-Piyasekara]

Description

When a worker with a return type is defined, and nothing is being returned, the compiler gives the following error message,

ERROR [main.bal:(24:5,24:6)] this function must return a result

It is incorrect because the structure in question is a worker and not a function. The error should be refactored into something similar to,

ERROR [main.bal:(24:5,24:6)] this worker must return a result

Steps to Reproduce

Compile the following code,

public function main() returns error? {
    worker A returns int {

    }
}

Affected Version(s)

Ballerina 2201.8.6 (Swan Lake Update 8)

OS, DB, other environment details and versions

No response

Related area

-> Compilation

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