webmap-import: Add error-checking for CreateFeature().

Despite using gdal.UseExceptions() a failed call doesn't raise an
exception, so we need to check the return value to avoid missing
features.

1 files changed, 3 insertions, 1 deletions

diff --git a/webmap-import b/webmap-import
index fccdc84..56d907c 100755
--- a/webmap-import
+++ b/webmap-import
@@ -994,7 +994,9 @@ def importSource2(lyr_dst, path, args={}, basedir=None, extent=None):
                     f'to {ogr.GeometryTypeToName(eGType_dst)} not implemented')
             feature2.SetGeometryDirectly(geom)
 
-        lyr_dst.CreateFeature(feature2)
+        if lyr_dst.CreateFeature(feature2) != ogr.OGRERR_NONE:
+            raise Exception(f'Could not transfer source feature #{feature.GetFID()}')
+
         n += 1
         feature = lyr.GetNextFeature()