Checkmk Werk 12643: oracle_asm_diskgroup: fix crash "TypeError (unsupported operand type(s) for *: 'NoneType' and 'int')".

ID: 12643 Title: oracle_asm_diskgroup: fix crash "TypeError (unsupported operand type(s) for *: 'NoneType' and 'int')". Component: Checks & agents Level: 1 Class: Bug fix Version: 2.1.0i1 If the checkbox for the parameter "Trend computation" of the rule "ASM Disk Group (used space and growth)" was enabled, but the parameter "Enable trend computation" (trendrange) was left unchecked the check oracle_asm_diskgroup crashed with the error message: "TypeError (unsupported operand type(s) for *: 'NoneType' and 'int')". This condition is fixed by falling back to default parameters.