BLI_linklist_free() was incorrectly taking MEM_freeN() as an argument, evidentially this works on x86 - but could cause issues later on.

add BLI_linklist_freeN() which MEM_freeN's each item.

source/blender/blenlib/BLI_linklist.h

@@ -59,6 +59,7 @@ void    BLI_linklist_prepend_arena(struct LinkNode **listp, void *ptr, struct Me
 void    BLI_linklist_insert_after(struct LinkNode **listp, void *ptr);
 
 void    BLI_linklist_free(struct LinkNode *list, LinkNodeFreeFP freefunc);
+void    BLI_linklist_freeN(struct LinkNode *list);
 void    BLI_linklist_apply(struct LinkNode *list, LinkNodeApplyFP applyfunc, void *userdata);
 
 #endif

source/blender/blenlib/intern/BLI_linklist.c

@@ -155,6 +155,18 @@ void BLI_linklist_free(LinkNode *list, LinkNodeFreeFP freefunc)
 	}
 }
 
+void BLI_linklist_freeN(LinkNode *list)
+{
+	while (list) {
+		LinkNode *next = list->next;
+
+		MEM_freeN(list->link);
+		MEM_freeN(list);
+
+		list = next;
+	}
+}
+
 void BLI_linklist_apply(LinkNode *list, LinkNodeApplyFP applyfunc, void *userdata)
 {
 	for (; list; list = list->next)

source/blender/blenlib/intern/BLI_memarena.c

@@ -74,7 +74,7 @@ void BLI_memarena_use_align(struct MemArena *ma, const int align)
 
 void BLI_memarena_free(MemArena *ma)
 {
-	BLI_linklist_free(ma->bufs, (void (*)(void *))MEM_freeN);
+	BLI_linklist_freeN(ma->bufs);
 	MEM_freeN(ma);
 }
 

source/blender/blenlib/intern/storage.c

@@ -616,7 +616,7 @@ LinkNode *BLI_file_read_as_lines(const char *name)
  */
 void BLI_file_free_lines(LinkNode *lines)
 {
-	BLI_linklist_free(lines, (void (*)(void *))MEM_freeN);
+	BLI_linklist_freeN(lines);
 }
 
 /** is file1 older then file2 */