From c161339d89dc11539d37b5e434091afafd01b86b Mon Sep 17 00:00:00 2001
From: Oliver Tonnhofer <olt@bogosoft.com>
Date: Tue, 21 Nov 2017 09:01:20 +0100
Subject: [PATCH] mapping: check if geom is non null before calculating area

---
 mapping/columns.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/mapping/columns.go b/mapping/columns.go
index 41705a4..f6b7ace 100644
--- a/mapping/columns.go
+++ b/mapping/columns.go
@@ -140,6 +140,9 @@ func MakePseudoArea(columnName string, columnType ColumnType, column config.Colu
 }
 
 func Area(val string, elem *element.OSMElem, geom *geom.Geometry, match Match) interface{} {
+	if geom.Geom == nil {
+		return nil
+	}
 	area := geom.Geom.Area()
 	if area == 0.0 {
 		return nil
@@ -148,6 +151,9 @@ func Area(val string, elem *element.OSMElem, geom *geom.Geometry, match Match) i
 }
 
 func WebmercArea(val string, elem *element.OSMElem, geom *geom.Geometry, match Match) interface{} {
+	if geom.Geom == nil {
+		return nil
+	}
 	area := geom.Geom.Area()
 	if area == 0.0 {
 		return nil