Fix compile error ‘isnan’ was not declared in this scope
BUG=none
Review-Url: https://codereview.chromium.org/2022793002
diff --git a/xfa/fxbarcode/utils.h b/xfa/fxbarcode/utils.h
index ca2f321..dadf348 100644
--- a/xfa/fxbarcode/utils.h
+++ b/xfa/fxbarcode/utils.h
@@ -26,12 +26,10 @@
#endif
#if (_FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_)
#define FXSYS_isnan(x) _isnan(x)
-#elif(_FX_OS_ == _FX_MACOSX_ || _FX_OS_ == _FX_IOS_)
+#elif(_FX_OS_ == _FX_MACOSX_ || _FX_OS_ == _FX_IOS_ || \
+ _FX_OS_ == _FX_LINUX_DESKTOP_ || _FX_OS_ == _FX_ANDROID_)
#include <cmath>
#define FXSYS_isnan(x) std::isnan(x)
-#elif(_FX_OS_ == _FX_LINUX_DESKTOP_ || _FX_OS_ == _FX_ANDROID_)
-#include <math.h>
-#define FXSYS_isnan(x) isnan(x)
#endif
#if (_FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_)
#define FXSYS_nan() (std::numeric_limits<float>::quiet_NaN())