MT#59962 xmlrpc: add va_end

Change-Id: I06d76e2d148b7fc6d7554db62c3ae18fcffaa690
Warned-by: Coverity

apps/xmlrpc2di/xmlrpc++/src/XmlRpcUtil.cpp

@@ -78,6 +78,7 @@ void XmlRpcUtil::log(int level, const char* fmt, ...)
     vsnprintf(buf,sizeof(buf)-1,fmt,va);
     buf[sizeof(buf)-1] = 0;
     XmlRpcLogHandler::getLogHandler()->log(level, buf);
+    va_end(va);
   }
 }