RFR: 8229129: ZGC: Fix incorrect format string for doubles

[Stefan Karlsson]

Looks good.

StefanK

On 2019-08-05 13:50, Per Liden wrote:
> ZGC sometimes prints doubles with an incorrect format string, "%lf" 
> instead of "%f". The "l" doesn't cause any problems, but it also has no 
> meaning when printing doubles, so it should be removed.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8229129
> Webrev: http://cr.openjdk.java.net/~pliden/8229129/webrev.0
> 
> /Per