Fixed obscure sigsegv introduced with 35 or 39 by obeying libburn.h text

cdrskin/cdrskin.c

@@ -38,6 +38,9 @@ See option blank= for an example.
 ------------------------------------------------------------------------------
 About compliance with *strong urge* of API towards burn_drive_scan_and_grab() 
 
+For a more comprehensive example of the advised way to behave with libburn
+see  test/burniso.c  test/blank.c  test/devices.c .
+ 
 cdrskin was the initiator of the whitelist functionality within libburn.
 Now it has problems to obviously comply with the new API best practice
 presciptions literally. Therefore this explanation:
@@ -2079,7 +2082,14 @@ int Cdrskin_reinit_lib_with_adr(struct CdrskiN *skin, int flag)
            "cdrskin: FATAL : unable to determine persistent drive address\n");
    ret= 0; goto ex;
  }
+
+/* >>> A60827: this causes a SIGSEGV when releasing the re-initialized drive
+               skin->drives[skin->driveno].drive after burn (then as
+               skin->grabbed_drive, but already being 0xb0 in Cdrskin_grab) )
+
  burn_drive_info_free(skin->drives);
+*/
+
  burn_finish();
  if(!burn_initialize()) {
    fflush(stdout);