[sr-dev] Acc: cdr extra2strar allocation issue and proposed fix

Hello, At 1&1 we have spotted an issue related to the cdr_extra parameters: for more than 10 string cdr_extra parameters, the addresses used by the new parameters overwrite the previous ones (this did not happen in 3.1, but is reproducible since at least 3.3). I attached a patch that implements a solution where we allocate memory for the cdr extra params with pkg_malloc() and free it once it is no longer needed. Daniel, if there is no comment related to this solution, I will commit the patch. Thank you, Lucian Balaceanu