[base16] Fix comparison of signed and unsigned integers

gcc 4.7.1 fails to report this erroneous comparison unless assertions
are enabled.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/core/base16.c b/src/core/base16.c
index 2544bd7fbd7ce1566601bec6ac1788107aba90ad..bf9cc21bb24a815822acb298838d85fd9ba94b9f 100644 (file)
--- a/src/core/base16.c
+++ b/src/core/base16.c
@@ -129,7 +129,7 @@ int base16_decode ( const char *encoded, uint8_t *raw ) {
 
        DBG ( "Base16-decoded \"%s\" to:\n", encoded );
        DBG_HDA ( 0, raw, len );
-       assert ( len <= base16_decoded_max_len ( encoded ) );
+       assert ( len <= ( int ) base16_decoded_max_len ( encoded ) );
 
        return len;
 }