Remove needless assignment
Remove needless assignment

There is dead assignment about variable "c".

Here is the code:

  while (...) {
    c = *str
    switch (...) {
      case GRN_LOADER_BEGIN :
      if (...) {
        c = *str; <- HERE
        continue;
      }
    ...

hiroyuki-sato/groonga,kenhys/groonga,komainu8/groonga,naoa/groonga,komainu8/groonga,kenhys/groonga,hiroyuki-sato/groonga,hiroyuki-sato/groonga,cosmo0920/groonga,redfigure/groonga,redfigure/groonga,redfigure/groonga,naoa/groonga,komainu8/groonga,kenhys/groonga,groonga/groonga,naoa/groonga,cosmo0920/groonga,hiroyuki-sato/groonga,hiroyuki-sato/groonga,naoa/groonga,groonga/groonga,groonga/groonga,redfigure/groonga,naoa/groonga,groonga/groonga,kenhys/groonga,naoa/groonga,cosmo0920/groonga,komainu8/groonga,groonga/groonga,cosmo0920/groonga,naoa/groonga,hiroyuki-sato/groonga,komainu8/groonga,redfigure/groonga,komainu8/groonga,redfigure/groonga,kenhys/groonga,cosmo0920/groonga,naoa/groonga,redfigure/groonga,komainu8/groonga,groonga/groonga,komainu8/groonga,cosmo0920/groonga,hiroyuki-sato/groonga,cosmo0920/groonga,groonga/groonga,redfigure/groonga,kenhys/groonga,kenhys/groonga,cosmo0920/groonga,kenhys/groonga,groonga/groonga,hiroyuki-sato/groonga