remove unused mrb_mem_clear

include/mruby/array.h

@@ -43,7 +43,6 @@ mrb_value mrb_ary_unshift(mrb_state *mrb, mrb_value self, mrb_value item);
 mrb_value mrb_ary_new4(mrb_state *mrb, int n, const mrb_value *elts);
 mrb_value mrb_assoc_new(mrb_state *mrb, mrb_value car, mrb_value cdr);
 mrb_value mrb_ary_entry(mrb_value ary, int offset);
-void mrb_mem_clear(mrb_value *mem, int size);
 mrb_value mrb_ary_tmp_new(mrb_state *mrb, int capa);
 mrb_value mrb_ary_sort(mrb_state *mrb, mrb_value ary);
 mrb_value mrb_ary_shift(mrb_state *mrb, mrb_value self);

src/array.c

@@ -769,14 +769,6 @@ mrb_ary_entry(mrb_value ary, int offset)
   return ary_elt(ary, offset);
 }
 
-void
-mrb_mem_clear(mrb_value *mem, int size)
-{
-  while (size--) {
-    *mem++ = mrb_nil_value();
-  }
-}
-
 mrb_value
 mrb_ary_tmp_new(mrb_state *mrb, int capa)
 {

src/struct.c

@@ -419,9 +419,7 @@ mrb_struct_initialize_withArg(mrb_state *mrb, int argc, mrb_value *argv, mrb_val
   st->ptr = mrb_malloc(mrb, sizeof(mrb_value)*argc);
   st->len = n;
   memcpy(st->ptr, argv, sizeof(mrb_value)*argc);
-  //if (n > argc) {
-  //  mrb_mem_clear(RSTRUCT_PTR(self)+argc, n-argc);
-  //}
+
   return self;
 }