[PATCH 11/41] merge.c: use the stdlib EXIT_SUCCESS or EXIT_FAILURE exit status

[Elia Pinto <gitter.spiros@gmail.com>]

The C standard specifies two constants, EXIT_SUCCESS and  EXIT_FAILURE, that may
be  passed  to exit() to indicate successful or unsuccessful termination,
respectively. The value of status in exit(status) may be EXIT_SUCCESS,
EXIT_FAILURE, or any other value, though only the least significant 8 bits (that
is, status & 0377) shall be available to a waiting parent proces. So exit(-1)
return 255.

Use the C standard EXIT_SUCCESS and EXIT_FAILURE to indicate the program exit
status instead of "0" or "1", respectively. In <stdlib.h> EXIT_FAILURE has the
value "1": use EXIT_FAILURE even if the program uses exit(-1), ie 255, for
consistency.

Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
---
 builtin/merge.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/builtin/merge.c b/builtin/merge.c
index f178f5a3ee..3bb6f902f0 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -209,7 +209,7 @@ static struct strategy *get_strategy(const char *name)
 				fprintf(stderr, " %s", other_cmds.names[i]->name);
 			fprintf(stderr, ".\n");
 		}
-		exit(1);
+		exit(EXIT_FAILURE);
 	}
 
 	CALLOC_ARRAY(ret, 1);
@@ -824,7 +824,7 @@ static void abort_commit(struct commit_list *remoteheads, const char *err_msg)
 	fprintf(stderr,
 		_("Not committing merge; use 'git commit' to complete the merge.\n"));
 	write_merge_state(remoteheads);
-	exit(1);
+	exit(EXIT_FAILURE);
 }
 
 static const char merge_editor_comment[] =
-- 
2.35.1