bisect: Fix not returning to old folder

Signed-off-by: Arisu Tachibana <arisu.tachibana@miraclelinux.com>

Author: aliceinwire

kcidev/subcommands/bisect.py

@@ -132,6 +132,7 @@ def init_bisect(repo, state):
         kci_log("---")
         kci_log(results.stdout)
 
+    os.chdir(olddir)
     return repo.head.commit.hexsha