Fix MinGW-w64 GCC 4.7 compilation

src/platform-win32.cc

Index: src/platform-win32.cc
===================================================================
--- src/platform-win32.cc	(revision 11315)
+++ src/platform-win32.cc	(working copy)
@@ -51,6 +51,22 @@
 // the Microsoft Visual Studio C++ CRT.
 #ifdef __MINGW32__
 
+
+#ifndef __MINGW64_VERSION_MAJOR
+
+#define _TRUNCATE 0
+#define STRUNCATE 80
+
+inline void MemoryBarrier() {
+  int barrier = 0;
+  __asm__ __volatile__("xchgl %%eax,%0 ":"=r" (barrier));
+}
+
+#endif  // __MINGW64_VERSION_MAJOR
+
+
+#ifndef MINGW_HAS_SECURE_API
+
 int localtime_s(tm* out_tm, const time_t* time) {
   tm* posix_local_time_struct = localtime(time);
   if (posix_local_time_struct == NULL) return 1;
@@ -64,13 +80,6 @@
   return *pFile != NULL ? 0 : 1;
 }
 
-
-#ifndef __MINGW64_VERSION_MAJOR
-#define _TRUNCATE 0
-#define STRUNCATE 80
-#endif  // __MINGW64_VERSION_MAJOR
-
-
 int _vsnprintf_s(char* buffer, size_t sizeOfBuffer, size_t count,
                  const char* format, va_list argptr) {
   ASSERT(count == _TRUNCATE);
@@ -104,17 +113,8 @@
   return 0;
 }
 
+#endif  // MINGW_HAS_SECURE_API
 
-#ifndef __MINGW64_VERSION_MAJOR
-
-inline void MemoryBarrier() {
-  int barrier = 0;
-  __asm__ __volatile__("xchgl %%eax,%0 ":"=r" (barrier));
-}
-
-#endif  // __MINGW64_VERSION_MAJOR
-
-
 #endif  // __MINGW32__
 
 // Generate a pseudo-random number in the range 0-2^31-1. Usually