| Index: core/src/fxcrt/fx_basic_utf.cpp
 | 
| diff --git a/core/src/fxcrt/fx_basic_utf.cpp b/core/src/fxcrt/fx_basic_utf.cpp
 | 
| index 749e1226d3f239c1d00dd292b4d412b03c8a5e0b..3625feb130cbed89f155eb523a5e48b03f4393be 100644
 | 
| --- a/core/src/fxcrt/fx_basic_utf.cpp
 | 
| +++ b/core/src/fxcrt/fx_basic_utf.cpp
 | 
| @@ -74,7 +74,7 @@ void CFX_UTF8Encoder::Input(FX_WCHAR unicode) {
 | 
|    }
 | 
|  }
 | 
|  CFX_ByteString FX_UTF8Encode(const FX_WCHAR* pwsStr, FX_STRSIZE len) {
 | 
| -  FXSYS_assert(pwsStr != NULL);
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| +  FXSYS_assert(pwsStr);
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|    if (len < 0) {
 | 
|      len = FXSYS_wcslen(pwsStr);
 | 
|    }
 | 
| 
 |