RFR: 8197408: Bad pointer comparison and small cleanup in os_linux.cpp

[Robbin Ehn]

Hi, forgot to say is passes hotspot_tier1 and test/hotspot/jtreg/runtime/containers.

/Robbin

On 02/08/2018 10:03 AM, Robbin Ehn wrote:
> Hi all,
> 
> There is a bad pointer comparison in os_linux.cpp while looking at that I saw 
> some if statement were missing bracket, a lot of extra scopes and complexity in 
> the scoping.
> 
> Webrev:
> http://cr.openjdk.java.net/~rehn/8197408/webrev/
> Bug:
> http://cr.openjdk.java.net/~rehn/8197408/webrev/
> 
> Thanks, Robbin