Fix an intermittent failure in browser/devtools/debugger/test/browser_dbg_step-out.js (bug 882380); r=me

browser/devtools/debugger/test/browser_dbg_step-out.js

@@ -19,7 +19,6 @@ function test()
     gPane = aPane;
     gDebugger = gPane.panelWin;
 
-    expectUncaughtException();
     testNormalReturn();
   });
 }

browser/devtools/debugger/test/test-step-out.html

@@ -18,11 +18,16 @@
         return r;
       }
       function error(aArg) {
+        function inner(aArg) {
           debugger;
           var r = 10;
           throw "boom";
           return r;
         }
+        try {
+          inner(aArg);
+        } catch (e) {}
+      }
       var button = document.getElementById("return");
       button.addEventListener("click", normal, false);
       button = document.getElementById("throw");