[syslinux] com32's realloc function

[Kenneth Fyfe]

Hello list,

I've been playing with com32 programs lately and I've come across a
a problem with the realloc function in libcom32.  The code that rounds
up the size looks to be missing a '~' operator, resulting in it
truncating every request to a size of 0-15 bytes.

The little patch below fixes it up to match the corresponding line in
malloc, which makes it work for me.

K.

diff -u /tmp/syslinux-3.11/com32/lib/realloc.c syslinux-3.11/com32/lib/realloc.c
--- /tmp/syslinux-3.11/com32/lib/realloc.c	2004-11-10 22:31:50.000000000 +0000
+++ syslinux-3.11/com32/lib/realloc.c	2006-01-14 23:37:52.000000000 +0000
@@ -24,7 +24,7 @@
   }
 
   /* Add the obligatory arena header, and round up */
-  size = (size+2*sizeof(struct arena_header)-1) & ARENA_SIZE_MASK;
+  size = (size+2*sizeof(struct arena_header)-1) & ~ARENA_SIZE_MASK;
 
   ah = (struct free_arena_header *)
     ((struct arena_header *)ptr - 1);