Use 1MB page size for iterators notebooks.

Author: plusvic

libyara/exec.c

@@ -470,10 +470,9 @@ int yr_execute_code(YR_SCAN_CONTEXT* context)
       yr_arena_create(1, 512 * sizeof(YR_OBJECT*), &obj_arena),
       yr_free(stack.items));
 
-  FAIL_ON_ERROR_WITH_CLEANUP(
-      yr_notebook_create(512 * sizeof(YR_ITERATOR), &it_notebook),
-      yr_arena_release(obj_arena);
-      yr_free(stack.items));
+  FAIL_ON_ERROR_WITH_CLEANUP(yr_notebook_create(1048576, &it_notebook),
+                             yr_arena_release(obj_arena);
+                             yr_free(stack.items));
 
 #ifdef YR_PROFILING_ENABLED
   start_time = yr_stopwatch_elapsed_ns(&context->stopwatch);