addressed some nits re "-O gen-C++" script optimization

src/script_opt/CPP/Compile.h

@@ -830,7 +830,7 @@ private:
 
 	// If "all_deep" is true, it means make all of the captures
 	// deep copies, not just the ones that were explicitly marked
-	// as deep copies.  That functionality is used to supporting
+	// as deep copies.  That functionality is used to support
 	// Clone() methods; it's not needed when creating a new lambda
 	// instance.
 	std::string GenLambdaClone(const LambdaExpr* l, bool all_deep);
@@ -928,7 +928,7 @@ private:
 	// an IntrusivePtr to such a type.
 	const char* IntrusiveVal(const TypePtr& t);
 
-	// Maps types to indices in the global "types__CPP" array.
+	// Maps types to indices in the global "CPP__Type__" array.
 	CPPTracker<Type> types = {"types", true};
 
 	// Used to prevent analysis of mutually-referring types from

src/script_opt/CPP/Driver.cc

@@ -124,8 +124,6 @@ void CPPCompile::Compile(bool report_uncompilable)
 		types.AddKey(tp, pfs.HashType(t));
 		}
 
-	Emit("TypePtr types__CPP[%s];", Fmt(static_cast<int>(types.DistinctKeys().size())));
-
 	NL();
 
 	for ( auto& g : pfs.AllGlobals() )

src/script_opt/CPP/Stmts.cc

@@ -89,6 +89,9 @@ void CPPCompile::GenStmt(const Stmt* s)
 				Emit("return false;");
 			break;
 
+		case STMT_FALLTHROUGH:
+			break;
+
 		case STMT_PRINT:
 			{
 			auto el = static_cast<const ExprListStmt*>(s)->ExprList();
@@ -96,9 +99,6 @@ void CPPCompile::GenStmt(const Stmt* s)
 			}
 			break;
 
-		case STMT_FALLTHROUGH:
-			break;
-
 		default:
 			reporter->InternalError("bad statement type in CPPCompile::GenStmt");
 		}