Some OutputMachOpcodes fields are uninitialized

SonarCloud reports:
  2 uninitialized fields at the end of the constructor calls

class OutputMachOpcodes : public OutputMap {
  int begin_inst_chain_rule;
  int end_inst_chain_rule;
  int begin_rematerialize;
  int end_rematerialize;
  int end_instructions;
public:
  OutputMachOpcodes(FILE *hpp, FILE *cpp, FormDict &globals, ArchDesc &AD)
    : OutputMap(hpp, cpp, globals, AD, "MachOpcodes"),
      begin_inst_chain_rule(-1), end_inst_chain_rule(-1), end_instructions(-1)

They are written on all paths that I can see, but they should be initialized anyway, at least for proper checks in closing().