8156207: Resource allocated BitMaps are often cleared unnecessarily Summary: Removed unnecessary clearing of BitMap. Reviewed-by: kbarrett, kvn, thartmann Contributed-by: Christian Hagedorn <christian.hagedorn@oracle.com>

^build/
^dist/
^.idea/
nbproject/private/
^webrev
^.src-rev$
^.jib/
\.DS_Store
\.metadata/
\.recommenders/
test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
.*/JTreport/.*
.*/JTwork/.*
.*/.git/.*