[ruby-cvs:61600] nobu:r54438 (trunk): st.c: fix collision statistics [ci skip]

[nobu at ruby-lang.org]

nobu	2016-03-30 22:02:16 +0900 (Wed, 30 Mar 2016)

  New Revision: 54438

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54438

  Log:
    st.c: fix collision statistics [ci skip]
    
    * st.c (stat_col): get rid of NaN.
    
    * st.c (collision_check): define before used.

  Modified files:
    trunk/st.c