fix(badblocks): protect against failglob

Author: akinomyoga

completions/badblocks

@@ -17,7 +17,7 @@ _comp_cmd_badblocks()
 
     if [[ $cur == -* ]]; then
         # Filter out -w (dangerous) and -X (internal use)
-        COMPREPLY=($(compgen -X -[wX] -W '$(_parse_usage "$1")' -- "$cur"))
+        COMPREPLY=($(compgen -X '-[wX]' -W '$(_parse_usage "$1")' -- "$cur"))
         return
     fi