fix: throw exception if bufferSize is below 1

src/Components/LineReader.php

@@ -100,7 +100,7 @@ private static function readBackwards($fh, int $pos): \Generator
                 $pos -= $bufferSize;
             }
             fseek($fh, $pos);
-            if ($bufferSize < 0) {
+            if ($bufferSize < 1) {
                 throw new \RuntimeException('Buffer size cannot be negative');
             }
             $chunk = fread($fh, $bufferSize);