Fix error for missing Fiber when tracking uncaught exceptions

rosen-vladimirov · rosen-vladimirov · commit c2de3080d713 · 2016-02-15T09:32:59.000+02:00
When tracking uncaught exceptions, we do not have fiber, but our code works with futures. So it fails with error "Can't wait without fiber".
Fix this by creating fiber.
diff --git a/lib/common b/lib/common
@@ -1 +1 @@
-Subproject commit 466227ea6e7d0f2cbc595b3ffbd45e2c158ff90b
+Subproject commit 778e48aa07b68025dc8c2b543bcb94397088a13f
