OOM异常

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## Current use version？
#### 当前使用的版本是多少？

```
3.11.2
```

## Will this problem occur in demo?
#### Demo能否复现这问题？

```
偶现。图片压缩库
```

## Describe the problem or provide an error log？
#### 描述问题或提供错误log？

```
Fatal Exception: java.lang.OutOfMemoryError
Failed to allocate a 134217744 byte allocation with 92842600 free bytes and 88MB until OOM, target footprint 268435456, growth limit 268435456
java.util.Arrays.copyOf (Arrays.java:3670)

java.io.ByteArrayOutputStream.write (ByteArrayOutputStream.java:156)
top.zibin.luban.Checker.toByteArray (Checker.java:201)
top.zibin.luban.Checker.isJPG (Checker.java:28)
top.zibin.luban.Engine.compress (Engine.java:76)
top.zibin.luban.Luban.compressReal (Luban.java:213)
top.zibin.luban.Luban.compress (Luban.java:194)
top.zibin.luban.Luban.access$1000 (Luban.java:23)
top.zibin.luban.Luban$1.run (Luban.java:146)
android.os.AsyncTask$SerialExecutor$1.run (AsyncTask.java:305)

java.lang.Thread.run (Thread.java:1012)
```

Start with the reported stack trace and inspect Checker.java, especially toByteArray and isJPG, then follow the calls through Engine.java and Luban.java. Try to reproduce the intermittent failure with the image-compression path described in the issue. Done means the reported OutOfMemoryError no longer occurs for that case and the behavior is verified.

Written by the indexing model from the issue text.