[PATCH] clean up compiler warnings in vsnprintf.c

[Al Stone]

Unless the warnings about pointer types being of mismatched
signedness in vsnprintf.c is useful to someone, this patch 
silences them.

Signed-off-by: Al Stone <ahs3 at fc.hp.com>

-- 
Ciao,
al
----------------------------------------------------------------------
Al Stone                                      Alter Ego:
Open Source and Linux R&D                     Debian Developer
Hewlett-Packard Company                       http://www.debian.org
E-mail: ahs3 at fc.hp.com                        ahs3 at debian.org
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diff --exclude .svn -Naur svn/libc/stdio/vsnprintf.c uClibc-ia64-current/libc/stdio/vsnprintf.c
--- svn/libc/stdio/vsnprintf.c	2007-02-07 17:39:24.000000000 -0700
+++ uClibc-ia64-current/libc/stdio/vsnprintf.c	2007-03-07 16:08:24.000000000 -0700
@@ -55,8 +55,8 @@
 
 	/* Set these last since __bufputc initialization depends on
 	 * __user_locking and only gets set if user locking is on. */
-	f.__bufstart = buf;
-	f.__bufend = buf + size;
+	f.__bufstart = (unsigned char *)buf;
+	f.__bufend = (unsigned char *)(buf + size);
 	__STDIO_STREAM_INIT_BUFREAD_BUFPOS(&f);
 	__STDIO_STREAM_DISABLE_GETC(&f);
 	__STDIO_STREAM_ENABLE_PUTC(&f);