hash: Add "fall through" annotations for 32-bit builds as well.
Commit ("Fix some -Wimplicit-fallthrough warnings building with
GCC 7") missed a few fall through annotations that only appear in 32-bit
builds.  This commit adds them.
CC: Timothy Redaelli
Acked-by: Andy Zhou
@@ -139,47 +139,61 @@ hash_bytes128(const void *p_, size_t len, uint32_t basis, ovs_u128 *out)
switch (len & 15) {
case 15:
k4 ^= tail[14] << 16;
+ /* fall through */
case 14:
k4 ^= tail[13] << 8;
+ /* fall through */
case 13:
k4 ^= tail[12] << 0;
k4 *= c4;
k4 = hash_rot(k4, 18);
k4 *= c1;
h4 ^= k4;
+ /* fall through */
case 12:
k3 ^= tail[11] << 24;
+ /* fall through */
case 11:
k3 ^= tail[10] << 16;
+ /* fall through */
case 10:
k3 ^= tail[9] << 8;
+ /* fall through */
case 9:
k3 ^= tail[8] << 0;
k3 *= c3;
k3 = hash_rot(k3, 17);
k3 *= c4;
h3 ^= k3;
+ /* fall through */
case 8:
k2 ^= tail[7] << 24;
+ /* fall through */
case 7:
k2 ^= tail[6] << 16;
+ /* fall through */
case 6:
k2 ^= tail[5] << 8;
+ /* fall through */
case 5:
k2 ^= tail[4] << 0;
k2 *= c2;
k2 = hash_rot(k2, 16);
k2 *= c3;
h2 ^= k2;
+ /* fall through */
case 4:
k1 ^= tail[3] << 24;
+ /* fall through */
case 3:
k1 ^= tail[2] << 16;
+ /* fall through */
case 2:
k1 ^= tail[1] << 8;
+ /* fall through */
case 1:
k1 ^= tail[0] << 0;
k1 *= c1;
