More work on clang warnings

Author: gershnik

unicode/scripts/lookup_builder.py

@@ -41,7 +41,7 @@ class {name}
                 if (c > max_char)
                     return false;
                 for(auto p = chars; *p; ++p)
-                    if (*p == c)
+                    if (*p == char16_t(c))
                         return true;
                 return false;
             }}