Fix some FX_BOOL / int noise in fxcrt.

core/fxcrt/fx_basic_buffer.cpp

Index: core/fxcrt/fx_basic_buffer.cpp
diff --git a/core/fxcrt/fx_basic_buffer.cpp b/core/fxcrt/fx_basic_buffer.cpp
index e954224d8a60b5cf13cfe6fc0bf7e0a4ac6ecb4a..8466e88c561d8c3c5f9daa1d486ad60d1726cd8d 100644
--- a/core/fxcrt/fx_basic_buffer.cpp
+++ b/core/fxcrt/fx_basic_buffer.cpp
@@ -244,7 +244,7 @@ bool CFX_FileBufferArchive::Flush() {
     return false;
   if (!m_pBuffer || !nRemaining)
     return true;
-  return m_pFile->WriteBlock(m_pBuffer.get(), nRemaining) > 0;
+  return m_pFile->WriteBlock(m_pBuffer.get(), nRemaining);
 }
 
 int32_t CFX_FileBufferArchive::AppendBlock(const void* pBuf, size_t size) {