`@inbounds` pessimizes closure

Consider the following function. Add `@inbounds` to this line to trrigger it
```
function bar()
       x=[2]
       for i in 1:10_000 #Add @inbounds to this line to trrigger it
       (m->2i)(x)
       end
 end
```
@oxinabox also found the bug is triggered with `@sync` and `@time` as well.
