fix(reporter): Process only valid scancodes in FossIdReporter

The algorithm to obtain the scancodes to be processed produced an
empty scancode for scan results produced by other scanners.
The `FossIdReporter` then tried to create a report for this scancode,
too, which did not cause the reporter to fail, but generated an
exception in the logs. Fix this by correctly determining the scancodes
for which reports should be generated.

Signed-off-by: Oliver Heger <oliver.heger@bosch.io>

plugins/reporters/fossid/src/main/kotlin/FossIdReporter.kt

@@ -96,7 +96,7 @@ class FossIdReporter : Reporter {
         return runBlocking(Dispatchers.IO) {
             val scanResults = input.ortResult.getScanResults().values.flatten()
             val scanCodes = scanResults.flatMapTo(mutableSetOf()) {
-                it.additionalData[SCAN_CODE_KEY].orEmpty().split(',')
+                it.additionalData[SCAN_CODE_KEY]?.split(',').orEmpty()
             }
 
             scanCodes.map { scanCode ->

plugins/reporters/fossid/src/test/kotlin/FossIdReporterTest.kt

@@ -242,6 +242,17 @@ class FossIdReporterTest : WordSpec({
 
             result shouldContainExactly listOf(FILE_SAMPLE)
         }
+
+        "ignore scan results without a scancode" {
+            val (serviceMock, reporterMock) = createReporterMock()
+            val input = createReporterInput(SCANCODE_1)
+
+            reporterMock.generateReport(input)
+
+            coVerify(exactly = 1) {
+                serviceMock.generateReport(any(), any(), any(), any(), any(), any())
+            }
+        }
     }
 })
 
@@ -275,7 +286,14 @@ private fun createReporterInput(vararg scanCodes: String): ReporterInput {
     val results = scanCodes.associateByTo(
         destination = sortedMapOf(),
         keySelector = { Identifier.EMPTY.copy(name = it) },
-        valueTransform = { listOf(createScanResult(it)) }
+        valueTransform = { code ->
+            val unmatchedScanResult = ScanResult(
+                provenance = UnknownProvenance,
+                scanner = ScannerDetails.EMPTY.copy(name = "otherScanner"),
+                summary = ScanSummary.EMPTY
+            )
+            listOf(createScanResult(code), unmatchedScanResult)
+        }
     )
 
     return ReporterInput(