If this file were compiled with -Wall, the following warning would be
reported:
scripts/kconfig/qconf.cc:312:6: warning: unused variable āiā [-Wunused-variable]
  int i;
      ^
The commit prepares to turn on -Wall for C++ host programs.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
          showName(false), showRange(false), showData(false), mode(singleMode), optMode(normalOpt),
          rootEntry(0), headerPopup(0)
 {
-       int i;
-
        setObjectName(name);
        setSortingEnabled(false);
        setRootIsDecorated(true);