file.c: fix compile error

* file.c (rb_file_s_rename): remove unmatched endif not removed at
  r52161.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

file.c

@@ -2887,7 +2887,6 @@ rb_file_s_rename(VALUE klass, VALUE from, VALUE to)
 #if defined DOSISH
 	switch (e) {
 	  case EEXIST:
-#endif
 	    if (chmod(dst, 0666) == 0 &&
 		unlink(dst) == 0 &&
 		rename(src, dst) == 0)