fix bug causing parser to miss new lines after let.

test.ar

@@ -1,6 +1,26 @@
-x = do
-  do
-    test
-  test
+let  a, 
+    b = 1, 
+    c, 
+    d = 42, 
+    temp_result, 
+    compute_area(radius) = 3.1415, 
+    identity(x) = x, 
+    f(x), 
+    g(y, z), 
+    result, 
+    z = 0, 
+    extremely_long_variable_name_to_test_limits, 
+    cache_value = compute_area(5), 
+    placeholder_fn_with_no_body(arg1, arg2, arg3), 
+    total = identity(100), 
+    deeply_nested_args_function(arg1, arg2, arg3, arg4, arg5), 
+    sum = a, 
+    another, 
+    another_function(),
+    just_null_here
 
-term.log("hello world")
+
+
+
+
+if (x) term.log("hello world")