Bug 829477 - Don't notify the UI if we didn't have crash ID. r=fabrice

Thanks margaret!

--HG--
extra : rebase_source : cde55fa2e2ed892f1f2dd3943122d55dae688e43

b2g/chrome/content/shell.js

@@ -121,12 +121,16 @@ var shell = {
       }
     } catch (e) { }
 
-    // Let Gaia notify the user of the crash.
+    // We can get here if we're just submitting old pending crashes.
+    // Check that there's a valid crashID so that we only notify the
+    // user if a crash just happened and not when we OOM. Bug 829477
+    if (crashID) {
       this.sendChromeEvent({
         type: "handle-crash",
         crashID: crashID,
         chrome: isChrome
       });
+    }
   },
 
   // this function submit the pending crashes.