correct location for memory free_list

src/kernel/memory.c

@@ -4,6 +4,8 @@
 #include "memory.h"
 #include "interrupts.h"
 
+static struct Page *free_list = NULL;
+
 HeapHeader *heap_free_list;
 extern uint8_t _heap_start[]; // named in the linker script
 

src/kernel/memory.h

@@ -16,8 +16,6 @@ typedef struct HeapHeader
 	struct HeapHeader *prev;
 } HeapHeader;
 
-static struct Page *free_list = NULL;
-
 void page_init();
 void page_free(void *addr);
 void *page_alloc();