fix: bug hunt

std/static_string_map/static_string_map.hon

@@ -64,7 +64,7 @@ init func($V type, $N usize, $entries [N]Pair(V)) StaticStringMap(V) {
 	max_len u32 :: u32(keys[N - 1].len)
 	len_indexes [usize(max_len) + 1]mut u32 = undefined
 	entry_index usize = 0
-	for 0..=(usize(max_len)) |length| {
+	for 0..=usize(max_len) |length| {
 		while entry_index < N and keys[entry_index].len < length : entry_index += 1 {}
 		len_indexes[length] = u32(entry_index)
 	}
@@ -90,4 +90,5 @@ get func($V type, map @StaticStringMap(V), key []u8) ?V {
 		if (candidate.len != key.len) return null
 		if mem.eql(u8, candidate, key) return map.values[idx]
 	}
+	return null
 }