documentation: replace Discussion section by link to user-manual chapter

diff --git a/builtin-apply.c b/builtin-apply.c
index 25b1447901d4085bdc5b554451c5e79b72cbae12..976ec770417cba4113c4c55f5ca7a5f7b8520f1e 100644 (file)
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -1514,7 +1514,8 @@ static int find_offset(const char *buf, unsigned long size, const char *fragment
        }
 
        /* Exact line number? */
-       if (!memcmp(buf + start, fragment, fragsize))
+       if ((start + fragsize <= size) &&
+           !memcmp(buf + start, fragment, fragsize))
                return start;
 
        /*