C++: Replace @buildin_op with @builtin_op

cpp/ql/src/semmle/code/cpp/exprs/BuiltInOperations.qll

@@ -4,7 +4,7 @@ import semmle.code.cpp.exprs.Expr
  * A C/C++ builtin operation. This is the root QL class encompassing
  * built-in functionality.
  */
-class BuiltInOperation extends Expr, @buildin_op {
+class BuiltInOperation extends Expr, @builtin_op {
   override string getCanonicalQLClass() { result = "BuiltInOperation" }
 }
 
@@ -12,17 +12,7 @@ class BuiltInOperation extends Expr, @buildin_op {
  * A C/C++ built-in operation that is used to support functions with variable numbers of arguments.
  * This includes `va_start`, `va_end`, `va_copy`, and `va_arg`.
  */
-class VarArgsExpr extends BuiltInOperation, @var_args_expr {
-  VarArgsExpr() {
-    this instanceof BuiltInVarArgsStart
-    or
-    this instanceof BuiltInVarArgsEnd
-    or
-    this instanceof BuiltInVarArg
-    or
-    this instanceof BuiltInVarArgCopy
-  }
-}
+class VarArgsExpr extends BuiltInOperation, @var_args_expr { }
 
 /**
  * A C/C++ `__builtin_va_start` built-in operation (used by some

cpp/ql/src/semmlecode.cpp.dbscheme

@@ -1647,7 +1647,7 @@ case @expr.kind of
                | @vacopyexpr
                ;
 
-@buildin_op = @var_args_expr
+@builtin_op = @var_args_expr
             | @noopexpr
             | @offsetofexpr
             | @intaddrexpr

cpp/upgrades/874439f4c501cb03a39fba053eef9d384216bbf2/semmlecode.cpp.dbscheme

@@ -1647,7 +1647,7 @@ case @expr.kind of
                | @vacopyexpr
                ;
 
-@buildin_op = @var_args_expr
+@builtin_op = @var_args_expr
             | @noopexpr
             | @offsetofexpr
             | @intaddrexpr