fix two uninitialized reads

core/src/fxcodec/codec/fx_codec_jpeg.cpp

Index: core/src/fxcodec/codec/fx_codec_jpeg.cpp
diff --git a/core/src/fxcodec/codec/fx_codec_jpeg.cpp b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
index 5e78e134aa5593bbe1349a5baa3349ed9a8ade01..33afcc2b8646f3bda7dc3c1e393c0e566eeb569b 100644
--- a/core/src/fxcodec/codec/fx_codec_jpeg.cpp
+++ b/core/src/fxcodec/codec/fx_codec_jpeg.cpp
@@ -282,6 +282,7 @@ static FX_BOOL _JpegLoadInfo(FX_LPCBYTE src_buf, FX_DWORD src_size, int& width,
     jerr.output_message = _error_do_nothing;
     jerr.format_message = _error_do_nothing2;
     jerr.reset_error_mgr = _error_do_nothing;
+    jerr.trace_level = 0;
     cinfo.err = &jerr;
     jmp_buf mark;
     cinfo.client_data = &mark;