Fix Coverity issue CHECKED_RETURN

lib/pkg_editor/src/pkg_editor.c:1604:3:
  Type: Unchecked return value from library (CHECKED_RETURN)

lib/pkg_editor/src/pkg_editor.c:1584:3: Unchecked call to function
  1. path: Condition "buffer != NULL", taking true branch. lib/pkg_editor/src/pkg_editor.c:1585:5:
  2. path: Condition "input == NULL", taking true branch. lib/pkg_editor/src/pkg_editor.c:1585:5:
  3. path: Falling through to end of if statement. lib/pkg_editor/src/pkg_editor.c:1588:3:
  4. path: Falling through to end of if statement. lib/pkg_editor/src/pkg_editor.c:1594:3:
  5. path: Condition "ret != 0", taking false branch. lib/pkg_editor/src/pkg_editor.c:1604:3:
  6. check_return: Calling "mkdir(full_name, 493U)" without checking return value. This library function may fail and return an error code.

Author: IlanTruanovsky

lib/pkg_editor/src/pkg_editor.c

@@ -1603,11 +1603,12 @@ static int acl_pkg_unpack_buffer_or_file(const char *buffer, size_t buffer_size,
     return 0;
   }
 
-  // Create output directory (ignore any errors).
+  // Create output directory (ignore any errors to avoid error-prone,
+  // platform-dependent error handling).
 #ifdef _WIN32
-  CreateDirectory(full_name, NULL);
+  (void)CreateDirectory(full_name, NULL);
 #else
-  mkdir(full_name, 0755);
+  (void)mkdir(full_name, 0755);
 #endif
   full_name[out_dir_length] = '/';