Appease validation warning about "Unsafe assignment to innerHTML"

This doesn't apply to the webextension but hasn't been factored out in
the build step yet.

proxy/spec/ui.spec.coffee

@@ -4,6 +4,7 @@ jasmine tests for Snowflake UI
 
 document =
   getElementById: (id) -> {}
+  createTextNode: (txt) -> txt
 
 describe 'UI', ->
 
@@ -27,7 +28,9 @@ describe 'UI', ->
 
   it 'sets status message when in debug mode', ->
     u = new DebugUI()
-    u.$status = { innerHTML: '' }
+    u.$status =
+      innerHTML: ''
+      appendChild: (txt) -> @innerHTML = txt
     u.setStatus('test')
     expect(u.$status.innerHTML).toEqual 'Status: test'
 

proxy/ui.coffee

@@ -37,7 +37,10 @@ class DebugUI extends UI
 
   # Status bar
   setStatus: (msg) ->
-    @$status.innerHTML = 'Status: ' + msg
+    txt = document.createTextNode('Status: ' + msg)
+    while @$status.firstChild
+      @$status.removeChild @$status.firstChild
+    @$status.appendChild txt
 
   setActive: (connected) ->
     super connected