[buildbot] phase1: fix typo in previous commit

[LEDE Commits]

jow pushed a commit to buildbot.git, branch master:
https://git.lede-project.org/5f4950488dc91402655da77c0a8c4f8128240fd8

commit 5f4950488dc91402655da77c0a8c4f8128240fd8
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Mon Nov 14 15:21:47 2016 +0100

    phase1: fix typo in previous commit
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 phase1/master.cfg | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/phase1/master.cfg b/phase1/master.cfg
index 750763e..2103a59 100644
--- a/phase1/master.cfg
+++ b/phase1/master.cfg
@@ -62,7 +62,7 @@ repo_url = ini.get("repo", "url")
 repo_branch = "master"
 
 if ini.has_option("repo", "branch"):
-	repo_branch = ini.get_option("repo", "branch")
+	repo_branch = ini.get("repo", "branch")
 
 rsync_bin_url = ini.get("rsync", "binary_url")
 rsync_bin_key = ini.get("rsync", "binary_password")