Don't throw out good data when there is no error

Based on playing with the HD4Free API, it looks like the 'error' property is only added if there is an error
So instead of ignoring all the data, just look for the property if/when we need it.

couchpotato/core/media/_base/providers/torrent/hd4free.py

@@ -25,11 +25,10 @@ class Base(TorrentProvider):
     def _search(self, movie, quality, results):
         data = self.getJsonData(self.urls['search'] % (self.conf('apikey'), self.conf('username'), getIdentifier(movie), self.conf('internal_only')))
 
-        if 'error' in data:
-            if data:
-                if self.login_fail_msg in data['error']: # Check for login failure
-                    self.disableAccount()
-                    return
+        if data:
+            if error in data and self.login_fail_msg in data['error']: # Check for login failure
+                self.disableAccount()
+                return
 
             try:
                 #for result in data[]: