savevm: unexport qemu_fflush

It is not used outside of savevm.c

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

qemu-file.h

@@ -71,7 +71,6 @@ QEMUFile *qemu_fopen_socket(int fd);
 QEMUFile *qemu_popen(FILE *popen_file, const char *mode);
 QEMUFile *qemu_popen_cmd(const char *command, const char *mode);
 int qemu_stdio_fd(QEMUFile *f);
-void qemu_fflush(QEMUFile *f);
 int qemu_fclose(QEMUFile *f);
 void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);
 void qemu_put_byte(QEMUFile *f, int v);

savevm.c

@@ -461,7 +461,7 @@ static void qemu_file_set_if_error(QEMUFile *f, int ret)
  *
  * In case of error, last_error is set.
  */
-void qemu_fflush(QEMUFile *f)
+static void qemu_fflush(QEMUFile *f)
 {
     if (!f->put_buffer)
         return;