Bug 137780 lots of warnings about unhandled enum and a complaint about

using an unscoped nsCOMPtr in a switch
r=dbradley sr=jst

content/html/document/src/nsHTMLContentSink.cpp

@@ -1899,6 +1899,7 @@ SinkContext::AddLeaf(const nsIParserNode& aNode)
         content->DoneCreatingElement();
         break;
       case eHTMLTag_textarea:
+      {
         // XXX textarea deserves to be treated like the container it is.
         nsCOMPtr<nsITextAreaElement> textarea(do_QueryInterface(content));
         if (textarea) {
@@ -1906,6 +1907,9 @@ SinkContext::AddLeaf(const nsIParserNode& aNode)
         }
         break;
       }
+      default:
+        break;
+      }
 
       NS_RELEASE(content);
     }
@@ -1936,7 +1940,7 @@ SinkContext::AddLeaf(const nsIParserNode& aNode)
     }
     break;
 
-  case eToken_skippedcontent:
+  default:
     break;
   }