[pitivi] flatpak: Oops, fix arguments

[Alexandru Băluț <alexbalut src gnome org>]

commit 552910aacfd1ef3c499d2eb9cf456dc771e79588
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Mon Oct 31 12:42:08 2016 +0100

    flatpak: Oops, fix arguments

 build/flatpak/pitivi-flatpak |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/build/flatpak/pitivi-flatpak b/build/flatpak/pitivi-flatpak
index 3c3e0ba..cba6c43 100755
--- a/build/flatpak/pitivi-flatpak
+++ b/build/flatpak/pitivi-flatpak
@@ -227,7 +227,7 @@ class FlatpakRepos(FlatpakObject):
             else:
                 return None
         else:
-            self.flatpak("remote-add", repo.name, "--from" +
+            self.flatpak("remote-add", repo.name, "--from",
                          repo.repo_file.name,
                          comment="Adding repo %s" % repo.name)