minor update

Author: hathach

libraries/Adafruit_LittleFS/src/Adafruit_LittleFS.cpp

@@ -240,29 +240,31 @@ bool Adafruit_LittleFS::rmdir_r (char const *filepath)
 }
 
 static int _lfs_count(void *p, lfs_block_t block) {
+  (void) block;
   *(size_t *)p += 1;
-	return 0;
+  return 0;
 }
 
 size_t Adafruit_LittleFS::usedBlocks() {
   _lockFS();
 
-  size_t blocks = 0;
-  lfs_traverse(&_lfs, _lfs_count, &blocks);
+  size_t block_used = 0;
+  lfs_traverse(&_lfs, _lfs_count, &block_used);
 
   _unlockFS();
-  return blocks;
+  return block_used;
 }
 
 size_t Adafruit_LittleFS::usedBytes() {
-  if (nullptr == _lfs_cfg) return 0;
-	const size_t blocks_used = usedBlocks();
-	return _lfs_cfg->block_size * blocks_used;
+  if (nullptr == _lfs_cfg)
+    return 0;
+  return _lfs_cfg->block_size * usedBlocks();
 }
 
 size_t Adafruit_LittleFS::totalBytes() {
-  if (nullptr == _lfs_cfg) return 0;
-	return _lfs_cfg->block_size * _lfs_cfg->block_count;
+  if (nullptr == _lfs_cfg)
+    return 0;
+  return _lfs_cfg->block_size * _lfs_cfg->block_count;
 }
 
 //------------- Debug -------------//