Fix autoenv's use of zstat

autoenv/autoenv.zsh

@@ -75,6 +75,9 @@ commands:
 # Global entered directories array.
 _autoenv_entered=()
 
+# Load zstat from stat module for inspecting modified time.
+zmodload -F zsh/stat b:zstat
+
 # Check if the given file is authorized, if not prompt the user to authorize,
 # ignore, or view the file. Authorized files and their modified times are
 # stored in the ~/.cache/autoenv/authorized file to make authorization