[postgis] Fix creation of new Z/M enabled, curved geometry type layers

(cherry picked from commit 07746db)

src/providers/postgres/qgspostgresprovider.cpp

@@ -3769,6 +3769,46 @@ bool QgsPostgresProvider::convertField( QgsField &field, const QMap<QString, QVa
   return true;
 }
 
+
+void postgisGeometryType( QgsWkbTypes::Type wkbType, QString &geometryType, int &dim )
+{
+  dim = 2;
+  QgsWkbTypes::Type flatType = QgsWkbTypes::flatType( wkbType );
+  geometryType = QgsWkbTypes::displayString( flatType ).toUpper();
+  switch ( flatType )
+  {
+    case QgsWkbTypes::Unknown:
+      geometryType = QStringLiteral( "GEOMETRY" );
+      break;
+
+    case QgsWkbTypes::NoGeometry:
+      geometryType.clear();
+      dim = 0;
+      break;
+
+    default:
+      break;
+  }
+
+  if ( QgsWkbTypes::hasZ( wkbType ) && QgsWkbTypes::hasM( wkbType ) )
+  {
+    dim = 4;
+  }
+  else if ( QgsWkbTypes::hasZ( wkbType ) )
+  {
+    dim = 3;
+  }
+  else if ( QgsWkbTypes::hasM( wkbType ) )
+  {
+    geometryType += QLatin1String( "M" );
+    dim = 3;
+  }
+  else if ( wkbType >= QgsWkbTypes::Point25D && wkbType <= QgsWkbTypes::MultiPolygon25D )
+  {
+    dim = 3;
+  }
+}
+
 QgsVectorLayerExporter::ExportError QgsPostgresProvider::createEmptyLayer( const QString &uri,
     const QgsFields &fields,
     QgsWkbTypes::Type wkbType,
@@ -3953,7 +3993,7 @@ QgsVectorLayerExporter::ExportError QgsPostgresProvider::createEmptyLayer( const
     int dim = 2;
     long srid = srs.postgisSrid();
 
-    QgsPostgresConn::postgisWkbType( wkbType, geometryType, dim );
+    postgisGeometryType( wkbType, geometryType, dim );
 
     // create geometry column
     if ( !geometryType.isEmpty() )