Merge branch 'rs/commit-export-env-simplify'

Code cleanup.

* rs/commit-export-env-simplify:
  commit: use strbuf_add() to add a length-limited string

builtin/commit.c

@@ -554,7 +554,7 @@ static void export_one(const char *var, const char *s, const char *e, int hack)
 	struct strbuf buf = STRBUF_INIT;
 	if (hack)
 		strbuf_addch(&buf, hack);
-	strbuf_addf(&buf, "%.*s", (int)(e - s), s);
+	strbuf_add(&buf, s, e - s);
 	setenv(var, buf.buf, 1);
 	strbuf_release(&buf);
 }