Return inside a code block causes the plugin to crash

[sbmahs]

Describe the bug
A conditional return inside a code block (to exit out of the block) causes the plugin to crash and abort the scan.
I expect it is trying to match the return in the code block to the return of the method, which declares a return type.

To Reproduce
Steps to reproduce the behavior:

1. Create a Gosu class with a method that declares a return type.

2. Inside that method, execute a code block that tests some condition and does a return to skip to the next item in the .each() list.

3. In the method, return nothing
   `public function isValid(pAccident : Accident, pOnlyErrors : boolean, pReportingPeriod : ReportingPeriod) : ArrayList {
   var rir = new ArrayList()
   var itemsIgnoredInBatchList = getItemIgnoredInBatchList(pReportingPeriod.StartDate)

   register.eachKeyAndValue( \ code, item -> {
   if (itemsIgnoredInBatchList.contains(code))
   return
   ... more code here ...
   })
   return rir
   `

4. See the error:
   Cannot invoke "de.friday.sonarqube.gosu.antlr.GosuParser$ExpressionContext.getText()" because "returnedValueContext" is null

Expected behavior
The scanner should see the return as an exit out of the .each() loop, not a return out of the function.
It would also be nice if the plugin reported the file it was working on when it aborts for whatever reason. :-)

Software Versions

• SonarQube Version: 10.5
• Plugin Version: 1.2.2 chore: prepare release v1.2.2 #128

Additional context

1. Scan is called from a Gradle v7.3.3 build
2. Using OpenJDK 17.0.2
3. SonarQube server is 10.5 which requires the above versions of Gradle and Java