only try first image

oml/media/cbr.py

@@ -10,13 +10,10 @@ def cover(path):
     try:
         from unrar import rarfile
         rar = rarfile.RarFile(path)
-        for cover in ox.sorted_strings(rar.namelist()):
-            try:
-                data = rar.read(cover)
-            except:
-                data = None
-            finally:
-                return data
+        files = rar.namelist()
+        if files:
+            cover = ox.sorted_strings(files)[0]
+            data = rar.read(cover)
     except:
         data = None
     return data

oml/media/cbz.py

@@ -15,14 +15,12 @@ def cover(path):
         return data
     files = [f.filename for f in z.filelist]
     if files:
-        for cover in ox.sortedstrings(files):
-            try:
-                data = z.read(cover)
-            except:
-                data = None
-            finally:
-                return data
-
+        cover = ox.sortedstrings(files)[0]
+        try:
+            data = z.read(cover)
+        except:
+            data = None
+    return data
 
 def info(path):
     data = {}