va_end
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header <cstdarg>
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|   void va_end( va_list ap );  | 
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The va_end macro performs cleanup for an ap object initialized by a call to va_start or va_copy.  va_end may modify ap so that it is no longer usable.
If there is no corresponding call to va_start or va_copy, or if va_end is not called before a function that calls va_start or va_copy returns, the behavior is undefined.
[edit] Parameters
| ap | - | an instance of the va_list type to clean up | 
[edit] Expanded value
(none)
[edit] See also
|    enables access to variadic function arguments  (function macro)  | |
|    (C++11)  | 
   makes a copy of the variadic function arguments   (function macro)  | 
|    accesses the next variadic function argument  (function macro)  | |