Fix dirty_unzip rule on non-zip files

thefuck/rules/dirty_untar.py

@@ -19,7 +19,6 @@ def _is_tar_extract(cmd):
 
 
 def _tar_file(cmd):
-
     for c in cmd:
         for ext in tar_extensions:
             if c.endswith(ext):

thefuck/rules/dirty_unzip.py

@@ -5,8 +5,11 @@ from thefuck.shells import quote
 
 
 def _is_bad_zip(file):
+    try:
         with zipfile.ZipFile(file, 'r') as archive:
             return len(archive.namelist()) > 1
+    except:
+        return False
 
 
 def _zip_file(command):