Merge pull request #1004 from AtlasOfLivingAustralia/feature/issue3292-2

fixes two exceptions updating site metadata - AtlasOfLivingAustralia/fieldcapture#3292

grails-app/services/au/org/ala/ecodata/SpatialService.groovy

@@ -166,7 +166,7 @@ class SpatialService {
  List checkForBoundaryIntersectionInLayers = metadataService.getGeographicConfig().checkForBoundaryIntersectionInLayers
  if (!mainGeometry.isValid()) {
  log.info("Main geometry invalid. Cannot check intersection is near boundary.")
- return response
+ return [response, [:]]
  }
  Map filteredResponse = [:]
  Map intersectionAreaByFacets = [:].withDefault { [:] }
@@ -241,11 +241,16 @@ class SpatialService {
  double intersectArea = intersection.getArea()
  double mainGeometryArea = mainGeometry.getArea()
  double proportion = 0.0
+ double area = 0.0d
  if (mainGeometryArea != 0.0d) {
  proportion = intersectArea/mainGeometryArea
  }
 
- [proportion, GeometryUtils.area(intersection)]
+ if (intersectArea != 0.0d) {
+ area = GeometryUtils.area(intersection)
+ }
+
+ [proportion, area]
  }
 
  /**