Avoid using stale InspectedContext pointers

test/inspector/console/destroy-context-during-log-expected.txt

Index: test/inspector/console/destroy-context-during-log-expected.txt
diff --git a/test/inspector/console/destroy-context-during-log-expected.txt b/test/inspector/console/destroy-context-during-log-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5a1fae569120469b6ca9a2c177a9874981f04130
--- /dev/null
+++ b/test/inspector/console/destroy-context-during-log-expected.txt
@@ -0,0 +1,12 @@
+Detaching context.
+Attaching context.
+Detaching context.
+Attaching context.

[kozy, 2016/10/21 15:06:53]

Please don't dump dettaching/attaching context. It can be root of flakiness
because here you dump text output from different threads.

[robwu, 2016/10/21 20:32:45]

Done.

+{
+    type : string
+    value : First inspector activity after attaching inspector
+}
+{
+    type : string
+    value : End of test
+}