[PATCH] git-update-index: report(...) now flushes stdout after printing the report line

This makes it equivalent to the behavior of git-hash-object and allows tools to
write one path
to stdin, flush and assure the work is done once it reads the corresponding
report line.
Previously attempting to do that would result in the program blocking as
git-update-index
did not flush its report line (yet). External programs use the git-hash-object
like behavior
to precisely control when which work is done while providing just-in-time
feedback to the end-user.
---
 builtin-update-index.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/builtin-update-index.c b/builtin-update-index.c
index 92beaaf..08bf933 100644
--- a/builtin-update-index.c
+++ b/builtin-update-index.c

@@ -37,6 +37,7 @@ static void report(const char *fmt, ...)
 	va_start(vp, fmt);
 	vprintf(fmt, vp);
 	putchar('\n');
+	maybe_flush_or_die(stdout, "line to stdout");
 	va_end(vp);
 }
 

-- 
1.6.5.3.172.g9e796