Add a few missing returns

assets/javascripts/app/db.coffee

@@ -60,7 +60,9 @@ class app.DB
         return
 
       txn = db.transaction ['docs', doc.slug], 'readwrite'
-      txn.oncomplete = -> if txn.error then onError() else onSuccess()
+      txn.oncomplete = ->
+        if txn.error then onError() else onSuccess()
+        return
 
       store = txn.objectStore(doc.slug)
       store.clear()
@@ -78,7 +80,9 @@ class app.DB
         return
 
       txn = db.transaction ['docs', doc.slug], 'readwrite'
-      txn.oncomplete = -> if txn.error then onError() else onSuccess()
+      txn.oncomplete = ->
+        if txn.error then onError() else onSuccess()
+        return
 
       store = txn.objectStore(doc.slug)
       store.clear()
@@ -154,6 +158,7 @@ class app.DB
 
   reset: ->
     try indexedDB?.deleteDatabase(NAME) catch
+    return
 
   useIndexedDB: ->
     !app.isSingleDoc() and !!window.indexedDB

assets/javascripts/models/doc.coffee

@@ -54,6 +54,7 @@ class app.models.Doc extends app.Model
       @reset data
       onSuccess()
       @_setCache data if options.writeCache
+      return
 
     ajax
       url: @indexUrl()
@@ -70,6 +71,7 @@ class app.models.Doc extends app.Model
     callback = =>
       @reset data
       onSuccess()
+      return
 
     setTimeout callback, 0
     true
@@ -94,10 +96,12 @@ class app.models.Doc extends app.Model
     error = =>
       @downloading = null
       onError()
+      return
 
     success = (data) =>
       @downloading = null
       app.db.store @, data, onSuccess, error
+      return
 
     ajax
       url: @dbUrl()
@@ -112,13 +116,17 @@ class app.models.Doc extends app.Model
     success = =>
       @downloading = null
       onSuccess()
+      return
 
     error = =>
       @downloading = null
       onError()
+      return
 
     app.db.unstore @, success, error
+    return
 
   getDownloadStatus: (callback) ->
     app.db.version @, (value) ->
       callback downloaded: !!value, version: value
+    return