Deallocate array?

[Matic Kukovec]

Was playing around with the code and found that this WORKS:
(note the "app_temp_array.reserve(50000000);" at the top, without 
this line it doesn't work)

import std.stdio, core.memory, std.cstream, std.array;
void main()
{
	string[] temp_array;
	Appender!(string[]) app_temp_array = appender(temp_array);
	app_temp_array.reserve(50000000);

	for(int i=0;i<50000000;i++)
	{
		app_temp_array.put("aaaaaaaaaaaaaaaaaaaaa");
	}
	
	temp_array = app_temp_array.data;
	
	app_temp_array.clear();
	GC.free(app_temp_array.data); or GC.free(temp_array.ptr);
	GC.collect();
	GC.minimize();
	
	writeln("end");	

	din.getc();
}

The memory usage shrinks from 400MB to 2MB, which is right!
Why?