bug fix

TinySTL/Vector.h

@@ -77,7 +77,7 @@ namespace TinySTL{
 		//<2F><><EFBFBD><EFBFBD>Ԫ<EFBFBD><D4AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 		value_type& operator[](const difference_type i){ return *(begin() + i); }
 		value_type& front(){ return *(begin()); }
-		value_type& back(){ return *(--end()); }
+		value_type& back(){ return *(end() - 1); }
 		pointer data(){ return start_; }
 
 		//<2F>޸<EFBFBD><DEB8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>صIJ<D8B5><C4B2><EFBFBD>