Fix some FX_BOOL / int noise in fxcrt.

core/fxcrt/fxcrt_posix.h

Index: core/fxcrt/fxcrt_posix.h
diff --git a/core/fxcrt/fxcrt_posix.h b/core/fxcrt/fxcrt_posix.h
index 37f6548d4019b31d858ea63667f47c9be6ee9dbf..20faa5c02f0ee54bbf049d9ccaf863dd044439d3 100644
--- a/core/fxcrt/fxcrt_posix.h
+++ b/core/fxcrt/fxcrt_posix.h
@@ -17,9 +17,9 @@ class CFXCRT_FileAccess_Posix : public IFXCRT_FileAccess {
   CFXCRT_FileAccess_Posix();
   ~CFXCRT_FileAccess_Posix() override;
 
-  // IFXCRT_FileAccess
-  FX_BOOL Open(const CFX_ByteStringC& fileName, uint32_t dwMode) override;
-  FX_BOOL Open(const CFX_WideStringC& fileName, uint32_t dwMode) override;
+  // IFXCRT_FileAccess:
+  bool Open(const CFX_ByteStringC& fileName, uint32_t dwMode) override;
+  bool Open(const CFX_WideStringC& fileName, uint32_t dwMode) override;
   void Close() override;
   FX_FILESIZE GetSize() const override;
   FX_FILESIZE GetPosition() const override;
@@ -30,8 +30,8 @@ class CFXCRT_FileAccess_Posix : public IFXCRT_FileAccess {
   size_t WritePos(const void* pBuffer,
                   size_t szBuffer,
                   FX_FILESIZE pos) override;
-  FX_BOOL Flush() override;
-  FX_BOOL Truncate(FX_FILESIZE szFile) override;
+  bool Flush() override;
+  bool Truncate(FX_FILESIZE szFile) override;
 
  protected:
   int32_t m_nFD;