Fix Coverity issue CHECKED_RETURN

lib/pkg_editor/src/pkg_editor.c:1651:7:
  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:1610:3:
  6. path: Condition "z_info.strm.avail_in > 0", taking true branch. lib/pkg_editor/src/pkg_editor.c:1612:5:
  7. path: Condition "!read_data(&info, 20UL /* sizeof (info) */, &z_info, input)", taking false branch. lib/pkg_editor/src/pkg_editor.c:1617:5:
  8. path: Condition "info.magic != 3203399403U", taking false branch. lib/pkg_editor/src/pkg_editor.c:1625:5:
  9. path: Condition "info.kind == PACK_END", taking false branch. lib/pkg_editor/src/pkg_editor.c:1630:5:
  10. path: Condition "!read_data(name, info.name_length, &z_info, input)", taking false branch. lib/pkg_editor/src/pkg_editor.c:1638:5:
  11. path: Condition "12288UL /* 3 * 4096 */ < out_dir_length", taking true branch. lib/pkg_editor/src/pkg_editor.c:1643:5:
  12. path: Condition "full_name[12287 /* 3 * 4096 - 1 */] != 0", taking true branch. lib/pkg_editor/src/pkg_editor.c:1647:5:
  13. path: Condition "info.kind == PACK_DIR", taking true branch. lib/pkg_editor/src/pkg_editor.c:1651:7:
  14. check_return: Calling "mkdir(full_name, 493U)" without checking return value. This library function may fail and return an error code.

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

@@ -1596,11 +1596,12 @@ 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] = '/';
 
@@ -1645,10 +1646,12 @@ static int acl_pkg_unpack_buffer_or_file(const char *buffer, size_t buffer_size,
     }
 
     if (info.kind == PACK_DIR) {
+      // 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
     } else {
       // Read file contents