SqlStatementLogger: Don't cause NRE if the parameter doesn't implement IDbDataParameter.

Author: oskarb

src/NHibernate/AdoNet/Util/SqlStatementLogger.cs

@@ -108,8 +108,7 @@ private static string GetParameterLoggableType(IDataParameter dataParameter)
 			var p = dataParameter as IDbDataParameter;
 			if (p != null)
 				return p.DbType + " (" + p.Size + ")";
-			return p.DbType.ToString();
-
+			return dataParameter.DbType.ToString();
 		}