Merge pull request AFLplusplus#2524 from serbal/cmin_py_env_fix

Inherit existing environment in afl_cmin.py for map size calculation

Author: vanhauser-thc

afl-cmin.py

@@ -647,7 +647,7 @@ def main():
         output = subprocess.run(
             [args.exe],
             capture_output=True,
-            env={"AFL_DUMP_MAP_SIZE": "1", "ASAN_OPTIONS": "detect_leaks=0"},
+            env={**os.environ, "AFL_DUMP_MAP_SIZE": "1", "ASAN_OPTIONS": "detect_leaks=0"},
         ).stdout
         afl_map_size = int(output)
         logger.info("Setting AFL_MAP_SIZE=%d", afl_map_size)