Sema: put a member variable after functions

Our coding guidelines stipulate that member variables must come after
the member functions in a class definition.

Author: ftynse

tc/lang/sema.h

@@ -170,8 +170,6 @@ static inline TreeRef match_types(TreeRef a, TreeRef b) {
 /// variable objects.
 /// - checks that input variables are readonly.
 struct Sema {
-  std::unordered_map<TreeRef, TreeRef> expr_to_type;
-
   TreeRef typeOfExpr(TreeRef ref) {
     if (expr_to_type.count(ref) == 0) {
       throw ErrorReport(ref)
@@ -707,6 +705,8 @@ struct Sema {
   // allowed
   std::unordered_set<std::string> live_input_names;
 
+  std::unordered_map<TreeRef, TreeRef> expr_to_type;
+
   std::unordered_set<std::string> inputParameters;
   std::unordered_set<std::string> nonTemporaries;
 };