Block comments don't give me back my memory?

Using Arduino IDE 1.x
6

With block comments:

/*
#include <SoftwareSerial.h>
#include <LiquidCrystal.h>
*/

void setup() {
}


void loop() {
}

ls sketch_jan18a.cpp.hex -l
2640 sketch_jan18a.cpp.hex

ls sketch_jan18a.cpp.elf -l
93226 sketch_jan18a.cpp.elf

With line comments:

//#include <SoftwareSerial.h>
//#include <LiquidCrystal.h>


void setup() {
}


void loop() {
}

ls sketch_jan18a.cpp.hex -l
1335 sketch_jan18a.cpp.hex

ls sketch_jan18a.cpp.elf -l
25235 08:34 sketch_jan18a.cpp.elf