Re: [PATCH v5 7/8] various *.c: use isatty(1|2), not isatty(STDIN_FILENO|STDERR_FILENO)

We have over 50 uses of "isatty(1)" and "isatty(2)" in the codebase,
only these two used the stdlib.h macros to refer to them.

Let's change these for consistency, and because a subsequent commit's
commit message outlines a recipe to change all of these for ad-hoc
testing, not needing to match these with that ad-hoc regex will make
things easier to explain.

Signed-off-by: Ævar Arnfjörð Bjarmason <redacted>
---
 builtin/bisect--helper.c | 2 +-
 builtin/bundle.c         | 2 +-
 compat/mingw.c           | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c
index 28a2e6a5750..1727cb051fb 100644
--- a/builtin/bisect--helper.c
+++ b/builtin/bisect--helper.c

@@ -830,7 +830,7 @@ static int bisect_autostart(struct bisect_terms *terms)
        fprintf_ln(stderr, _("You need to start by \"git bisect "
                          "start\"\n"));

-       if (!isatty(STDIN_FILENO))
+       if (!isatty(1))