restart transaction when CreateFeature fails

gistfile1.txt

diff -ur ../orig/gdal-2.0.2/apps/ogr2ogr.cpp ./apps/ogr2ogr.cpp
--- ../orig/gdal-2.0.2/apps/ogr2ogr.cpp 2016-01-22 11:51:09.000000000 +0100
+++ ./apps/ogr2ogr.cpp  2016-01-23 00:43:21.392717800 +0100
@@ -4049,6 +4049,17 @@
             {
                 CPLDebug( "OGR2OGR", "Unable to write feature " CPL_FRMT_GIB " into layer %s.\n",
                            poFeature->GetFID(), poSrcLayer->GetName() );
+
+                if( bLayerTransaction )
+                {
+                    poDstLayer->RollbackTransaction();
+                    poDstLayer->StartTransaction();
+                }
+                else
+                {
+                    poODS->RollbackTransaction();
+                    poODS->StartTransaction(bForceTransaction);
+                }
             }
 
 end_loop: