Do not include non-exist header file 'ansidecl.h'.
diff --git a/mingw-w64-headers/crt/ieeefp.h b/mingw-w64-headers/crt/ieeefp.h
index d22a4b5..d8bbf40 100644
--- a/mingw-w64-headers/crt/ieeefp.h
+++ b/mingw-w64-headers/crt/ieeefp.h
@@ -3,7 +3,6 @@
 
 #include <crtdefs.h>
 #include <math.h>
-#include <ansidecl.h>
 
 #endif /* _IEEE_FP_H_ */