fix postprocess for calibration

docs/Changelog.md

@@ -15,6 +15,7 @@
       function after the target has been restarted.
     - because of bad math and undefined behaviour fixes we have to change
       the CMPLOG map. **YOU NEED TO RECOMPILE CMPLOG TARGETS**
+    - fixed custom_post_process for calibration
   - frida_mode:
     - AFL_FRIDA_PERSISTENT_ADDR can now be be any reachable address not just
       a function entry

src/afl-fuzz-run.c

@@ -487,6 +487,9 @@ u8 calibrate_case(afl_state_t *afl, struct queue_entry *q, u8 *use_mem,
 
   }
 
+  u8 saved_afl_post_process_keep_original =
+      afl->afl_env.afl_post_process_keep_original;
+
   /* we need a dummy run if this is LTO + cmplog */
   if (unlikely(afl->shm.cmplog_mode)) {
 
@@ -661,6 +664,9 @@ u8 calibrate_case(afl_state_t *afl, struct queue_entry *q, u8 *use_mem,
 
 abort_calibration:
 
+  afl->afl_env.afl_post_process_keep_original =
+      saved_afl_post_process_keep_original;
+
   if (new_bits == 2 && !q->has_new_cov) {
 
     q->has_new_cov = 1;