only try first image

oml/media/cbr.py

@@ -10,15 +10,12 @@ def cover(path):
     try:
         from unrar import rarfile
         rar = rarfile.RarFile(path)
-        for cover in ox.sorted_strings(rar.namelist()):
-            try:
+        files = rar.namelist()
+        if files:
+            cover = ox.sorted_strings(files)[0]
             data = rar.read(cover)
     except:
         data = None
-            finally:
-                return data
-    except:
-        data = None
     return data
 
 def info(path):

oml/media/cbz.py

@@ -15,15 +15,13 @@ def cover(path):
         return data
     files = [f.filename for f in z.filelist]
     if files:
-        for cover in ox.sortedstrings(files):
+        cover = ox.sortedstrings(files)[0]
         try:
             data = z.read(cover)
         except:
             data = None
-            finally:
     return data
 
-
 def info(path):
     data = {}
     data['title'] = os.path.splitext(os.path.basename(path))[0]