RFR: 8217503: ZGC: Fix fall through bug in ZBarrierSetC2::escape_add_final_edges()

[Stefan Karlsson]

Looks good.

StefanK

On 2019-01-22 10:56, Per Liden wrote:
> The switch statement in ZBarrierSetC2::escape_add_final_edges() has a 
> fall through bug, letting the 
> Op_LoadBarrierSlowReg/Op_LoadBarrierWeakSlowReg case fall through into 
> the Op_Proj case.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8217503
> Webrev: http://cr.openjdk.java.net/~pliden/8217503/webrev.0
> 
> /Per