fix: pin.ls ignored opts when hash was present (#875)

Solves problem described in
ipfs/ipfs-companion#360 (comment)

License: MIT
Signed-off-by: Marcin Rataj <lidel@lidel.org>

Author: lidel

src/pin/ls.js

@@ -12,14 +12,12 @@ module.exports = (send) => {
     }
     if (typeof opts === 'function') {
       callback = opts
+      opts = null
     }
     if (hash && hash.type) {
       opts = hash
       hash = null
-    } else {
-      opts = null
     }
-
     send({
       path: 'pin/ls',
       args: hash,