Client: make client_vprintf() static

src/client/Client.hxx

@@ -35,7 +35,6 @@
 #include <list>
 
 #include <stddef.h>
-#include <stdarg.h>
 
 class SocketAddress;
 class EventLoop;
@@ -214,11 +213,6 @@ void
 client_new(EventLoop &loop, Partition &partition,
 	   int fd, SocketAddress address, int uid);
 
-/**
- * Write a printf-like formatted string to the client.
- */
-void client_vprintf(Client &client, const char *fmt, va_list args);
-
 /**
  * Write a printf-like formatted string to the client.
  */

src/client/ClientWrite.cxx

@@ -23,6 +23,7 @@
 #include "util/AllocatedString.hxx"
 
 #include <string.h>
+#include <stdarg.h>
 
 bool
 Client::Write(const void *data, size_t length)
@@ -37,7 +38,7 @@ Client::Write(const char *data)
 	return Write(data, strlen(data));
 }
 
-void
+static void
 client_vprintf(Client &client, const char *fmt, va_list args)
 {
 	client.Write(FormatStringV(fmt, args).c_str());