hg: jdk/submit: 8213745: Don't use memset to initialize array of RegMask in matcher.cpp

[roman at kennke.org]

Changeset: ff91443bfda6
Author:    rkennke
Date:      2018-11-12 19:38 +0100
URL:       http://hg.openjdk.java.net/jdk/submit/rev/ff91443bfda6

8213745: Don't use memset to initialize array of RegMask in matcher.cpp

! src/hotspot/share/opto/matcher.cpp