Corrected message duplication about emulated sessions on overwriteable media

xorriso/xorrisoburn.c

@@ -586,7 +586,7 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
  if(state != BURN_DISC_BLANK) {
    ret= isoburn_disc_get_msc1(drive, &load_lba);
    if(ret > 0) {
-     sprintf(xorriso->info_text + strlen(xorriso->info_text),
+     sprintf(xorriso->info_text,
              "Loading ISO image tree from LBA %d", load_lba);
      Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0); 
    }