124361: Avoid MSVC warning 4555 while including unordered_map.

stlport/systemstl/hash_map

@@ -23,16 +23,19 @@
 #define SYSTEM_STL_HASHMAP
 
 #ifdef HAVE_STL_INCLUDE_PATH
-	// TODO: use computed include file name
-	#include_next <unordered_map>
+    // TODO: use computed include file name
+    #include_next <unordered_map>
 #elif defined(__cplusplus) && (__cplusplus >= 201103L)
-	#include <unordered_map>
+    #include <unordered_map>
 #elif defined(_MSC_VER)
-	#include <../../VC/include/unordered_map>
-	#define STLP4_EMUBASE_NS ::std::tr1
+    #pragma warning(push)
+    #pragma warning(disable:4555)
+    #include <../../VC/include/unordered_map>
+    #pragma warning(pop)
+    #define STLP4_EMUBASE_NS ::std::tr1
 #else // fall back to boost/tr1
-	#include <boost/tr1/tr1/unordered_map>
-	#define STLP4_EMUBASE_NS ::boost
+    #include <boost/tr1/tr1/unordered_map>
+    #define STLP4_EMUBASE_NS ::boost
 #endif