[dak/master] fixup source_exist

[Joerg Jaspert <joerg@debian.org>]

reverse the order of the map check
make it a bit more readable

Signed-off-by: Joerg Jaspert <joerg@debian.org>
---
 daklib/dbconn.py |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/daklib/dbconn.py b/daklib/dbconn.py
index 6785294..e5db164 100755
--- a/daklib/dbconn.py
+++ b/daklib/dbconn.py
@@ -2277,9 +2277,9 @@ def source_exists(source, source_version, suites = ["any"], session=None):
             maps = [ (x[1], x[2]) for x in maps
                             if x[0] == "map" or x[0] == "silent-map" ]
             s = [suite]
-            for x in maps:
-                if x[1] in s and x[0] not in s:
-                    s.append(x[0])
+            for (from_, to) in maps:
+                if from_ in s and to not in s:
+                    s.append(to)
 
             q = q.filter(DBSource.suites.any(Suite.suite_name.in_(s)))
 
-- 
1.5.6.5