Remove FX_BOOL from core

core/fxcrt/fxcrt_windows.cpp

Index: core/fxcrt/fxcrt_windows.cpp
diff --git a/core/fxcrt/fxcrt_windows.cpp b/core/fxcrt/fxcrt_windows.cpp
index 87bbe96a5c69c117b9a521b26b7e389bc0f8e174..638338706e2cc884088dbde6c22842f1640df598 100644
--- a/core/fxcrt/fxcrt_windows.cpp
+++ b/core/fxcrt/fxcrt_windows.cpp
@@ -50,7 +50,7 @@ CFXCRT_FileAccess_Win64::~CFXCRT_FileAccess_Win64() {
 bool CFXCRT_FileAccess_Win64::Open(const CFX_ByteStringC& fileName,
                                    uint32_t dwMode) {
   if (m_hFile)
-    return FALSE;
+    return false;
 
   uint32_t dwAccess, dwShare, dwCreation;
   FXCRT_Windows_GetFileMode(dwMode, dwAccess, dwShare, dwCreation);
@@ -65,7 +65,7 @@ bool CFXCRT_FileAccess_Win64::Open(const CFX_ByteStringC& fileName,
 bool CFXCRT_FileAccess_Win64::Open(const CFX_WideStringC& fileName,
                                    uint32_t dwMode) {
   if (m_hFile)
-    return FALSE;
+    return false;
 
   uint32_t dwAccess, dwShare, dwCreation;
   FXCRT_Windows_GetFileMode(dwMode, dwAccess, dwShare, dwCreation);