Fixed compiling on 64-bit Windows

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%403785

src/stdlib/SDL_stdlib.c

@@ -28,17 +28,17 @@
 #ifndef HAVE_LIBC
 /* These are some C runtime intrinsics that need to be defined */
 
-#if defined(_MSC_VER) && !defined(_WIN64)
+#if defined(_MSC_VER)
 
 #ifndef __FLTUSED__
 #define __FLTUSED__
-#ifdef __cplusplus
-extern "C"
-#endif
-__declspec(selectany)
-     int _fltused = 1;
+__declspec(selectany) int _fltused = 1;
 #endif
 
+#ifdef _WIN64
+
+#else
+
 /* Float to long */
 void
 __declspec(naked)
@@ -693,6 +693,8 @@ RETZERO:
     /* *INDENT-ON* */
 }
 
+#endif /* _WIN64 */
+
 #endif /* MSC_VER */
 
 #endif /* !HAVE_LIBC */