Remove duplicate 'Error created at' stackframes in Opera

Author: Eric Wendelin

error-stack-parser.js

@@ -201,7 +201,8 @@
         // Opera 10.65+ Error.stack very similar to FF/Safari
         parseOpera11: function ErrorStackParser$$parseOpera11(error) {
             return error.stack.split('\n').filter(function (line) {
-                return !!line.match(FIREFOX_SAFARI_STACK_REGEXP);
+                return !!line.match(FIREFOX_SAFARI_STACK_REGEXP) &&
+                    !line.match(/^Error created at/);
             }.bind(this)).map(function (line) {
                 var tokens = line.split('@');
                 var locationParts = this.extractLocation(tokens.pop());

spec/fixtures/captured-errors.js

@@ -115,7 +115,8 @@ CapturedExceptions.OPERA_11 = {
     stack: "<anonymous function: run>([arguments not available])@http://path/to/file.js:27\n" +
     "bar([arguments not available])@http://domain.com:1234/path/to/file.js:18\n" +
     "foo([arguments not available])@http://domain.com:1234/path/to/file.js:11\n" +
-    "<anonymous function>@http://path/to/file.js:15",
+    "<anonymous function>@http://path/to/file.js:15\n" +
+    "Error created at <anonymous function>@http://path/to/file.js:15",
     stacktrace: "Error thrown at line 42, column 12 in <anonymous function: createException>() in http://path/to/file.js:\n" +
     "    this.undef();\n" +
     "called from line 27, column 8 in <anonymous function: run>(ex) in http://path/to/file.js:\n" +