Only ignore messages that don't have a type or message

Underscore.js throws a plain TypeError with no arguments. ugh.

Author: mattrobenolt

src/raven.js

@@ -507,7 +507,7 @@ function processException(type, message, fileurl, lineno, frames, options) {
     // This can only mean that the message was falsey since this value
     // is hardcoded into Sentry itself.
     // At this point, if the message is falsey, we bail since it's useless
-    if (!message) return;
+    if (!type && !message) return;
 
     if (globalOptions.ignoreErrors.test(message)) return;
 

test/raven.test.js

@@ -609,7 +609,7 @@ describe('globals', function() {
         it('should ignored falsey messages', function() {
             this.sinon.stub(window, 'send');
 
-            processException('Error', '', 'http://example.com', []);
+            processException('', '', 'http://example.com', []);
             assert.isFalse(window.send.called);
         });
     });