[v9_11] silence compiler warning

(cherry picked from commit 49a8cd6c01a8ee2a44676a0be5b11b1121f648cf)

diff --git a/lib/dns/rbtdb.c b/lib/dns/rbtdb.c
index 1f6d248d9ac84e6d68dc915814d470cb8457dd6c..c407d3e27165f42cf5c032f9e751c5ad7d995b40 100644 (file)
--- a/lib/dns/rbtdb.c
+++ b/lib/dns/rbtdb.c
@@ -307,7 +307,7 @@ typedef isc_uint32_t                    rbtdb_rdatatype_t;
 
 #define RBTDB_RDATATYPE_BASE(type)      ((dns_rdatatype_t)((type) & 0xFFFF))
 #define RBTDB_RDATATYPE_EXT(type)       ((dns_rdatatype_t)((type) >> 16))
-#define RBTDB_RDATATYPE_VALUE(base, ext)     ((rbtdb_rdatatype_t)(((isc_uint32_t)ext) << 16) | ((isc_uint32_t)base) & 0xffff)
+#define RBTDB_RDATATYPE_VALUE(base, ext) ((rbtdb_rdatatype_t)(((isc_uint32_t)ext) << 16) | (((isc_uint32_t)base) & 0xffff))
 
 #define RBTDB_RDATATYPE_SIGNSEC \
                RBTDB_RDATATYPE_VALUE(dns_rdatatype_rrsig, dns_rdatatype_nsec)