fix test after syntax changes

test/cases/small_conditional/if_end.tst

@@ -2,7 +2,7 @@ if_zero(0)
   four = 42
 end
 -- -- --
-s(:if_statement,
+s(:if_statement, :zero,
   s(:condition,
     s(:int, 0)),
   s(:true_statements,

test/cases/small_conditional/if_end_expressions.tst

@@ -2,11 +2,11 @@ if_overflow(3 + 100000 )
   Object.initialize(3)
 end
 -- -- --
-s(:if_statement,
+s(:if_statement, :overflow,
   s(:condition,
-    s(:operator_value, :>,
+    s(:operator_value, :+,
       s(:int, 3),
-      s(:name, :var))),
+      s(:int, 100000))),
   s(:true_statements,
     s(:call,
       s(:name, :initialize),