merge-file.hon commit builtin/log.c: Fix an "Using plain integer as NULL pointer" warning (22a8699)
   1#ifndef MERGE_FILE_H
   2#define MERGE_FILE_H
   3
   4extern void *merge_file(const char *path, struct blob *base, struct blob *our,
   5                        struct blob *their, unsigned long *size);
   6
   7#endif