[PATCH] dmi: dmicheck: fix build error on 32 bit builds

[Colin King]

From: Colin Ian King <colin.king at canonical.com>

Fix the following build issue:

dmi/dmicheck/dmicheck.c: In function 'dmi_smbios30_sane':
dmi/dmicheck/dmicheck.c:561:29: error: comparison between
  signed and unsigned integer expressions [-Werror=sign-compare]

Signed-off-by: Colin Ian King <colin.king at canonical.com>
---
 src/dmi/dmicheck/dmicheck.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/dmi/dmicheck/dmicheck.c b/src/dmi/dmicheck/dmicheck.c
index 0a8e85e..d0dc183 100644
--- a/src/dmi/dmicheck/dmicheck.c
+++ b/src/dmi/dmicheck/dmicheck.c
@@ -558,7 +558,7 @@ static int dmi_smbios30_sane(fwts_framework *fw, fwts_smbios30_entry *entry)
 		ptr += struct_length;
 
 		/* Scan for end of DMI entry, must be 2 zero bytes */
-		while (((ptr - table + 1) < table_length) &&
+		while (((ptr - table + 1) < (ssize_t)table_length) &&
 		       ((ptr[0] != 0) || (ptr[1] != 0)))
 				ptr++;
 		/* Skip over the two zero bytes */
-- 
2.5.0