vector file writer: adapt to 2fcbc8b (fixes #12985)

jef-n · jef-n · commit 513cfad235cf · 2015-06-19T22:23:23.000+02:00
diff --git a/src/core/qgsvectorfilewriter.cpp b/src/core/qgsvectorfilewriter.cpp
@@ -345,6 +345,9 @@ QgsVectorFileWriter::QgsVectorFileWriter(
     OGRFieldType ogrType = OFTString; //default to string
     int ogrWidth = attrField.length();
     int ogrPrecision = attrField.precision();
+    if ( ogrPrecision > 0 )
+      ++ogrWidth;
+
     switch ( attrField.type() )
     {
       case QVariant::LongLong:
