parse.y (parser_initialize): avoid redundant zero-ing

TypedData_Make_Struct already initializes fields to zero by default,
so there's no need to waste code re-zeroing them.

Size reduction on 32-bit x86:

  text    data     bss     dec     hex filename
 187231    2372      80  189683   2e4f3 parse.o.before
 186939    2372      80  189391   2e3cf parse.o

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

0 files changed, 0 insertions, 0 deletions