Fix wrong shift in trie_lookup_range_table

Somehow got in my head that >> 8 was the right shift for a chunk of 64.
Oops, sorry.

Author: raphlinus

src/etc/unicode.py

@@ -330,7 +330,7 @@ def emit_trie_lookup_range_table(f):
 fn trie_lookup_range_table(c: char, r: &'static BoolTrie) -> bool {
     let c = c as usize;
     if c < 0x800 {
-        trie_range_leaf(c, r.r1[c >> 8])
+        trie_range_leaf(c, r.r1[c >> 6])
     } else if c < 0x10000 {
         let child = r.r2[c >> 6];
         trie_range_leaf(c, r.r3[child as usize])

src/librustc_unicode/tables.rs

@@ -37,7 +37,7 @@ fn trie_range_leaf(c: usize, bitmap_chunk: u64) -> bool {
 fn trie_lookup_range_table(c: char, r: &'static BoolTrie) -> bool {
     let c = c as usize;
     if c < 0x800 {
-        trie_range_leaf(c, r.r1[c >> 8])
+        trie_range_leaf(c, r.r1[c >> 6])
     } else if c < 0x10000 {
         let child = r.r2[c >> 6];
         trie_range_leaf(c, r.r3[child as usize])