Handle null values in DbQueryOutputField.getType

[chriskormaris]

snap-admin/src/main/java/tech/ailef/snapadmin/external/dbmapping/query/DbQueryOutputField.java

Line 125 in e9c5e52

DbFieldType type = DbFieldType.fromClass(result.get(this).getClass()).getConstructor().newInstance();

Please add NullPointerException in the catch clause as follows:

try {
DbFieldType type = DbFieldType.fromClass(result.get(this).getClass()).getConstructor().newInstance();
return type.toString();
} catch (UnsupportedFieldTypeException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | SecurityException | NullPointerException e) {
return "-";
}