Fix rec_fibo's syntax — now works perfectly

src/tests/multi_args.exp

@@ -0,0 +1 @@
+42

src/tests/multi_args.lambda

@@ -0,0 +1,2 @@
+let sum = fun x -> fun y -> x + y in
+print(40 + 2)

src/tests/multi_args_rec.exp

@@ -0,0 +1,10 @@
+0
+0
+0
+0
+0
+0
+0
+0
+0
+0

src/tests/multi_args_rec.lambda

@@ -0,0 +1,8 @@
+let rec print_n = fun cur -> fun n ->
+    ifzero n - cur then
+        0
+    else
+        let x = print 0 in
+        print_n (cur + 1) n
+    in
+print_n 0 10

src/tests/rec_fibo.lambda

@@ -14,12 +14,12 @@ let fibo = fun n ->
         fibo_inner 2 1 1
     in
 
-let x = print fibo 0 in
-let x = print fibo 1 in
-let x = print fibo 2 in
-let x = print fibo 3 in
-let x = print fibo 4 in
-let x = print fibo 5 in
-let x = print fibo 6 in
-let x = print fibo 7 in
-print fibo 8
+let x = print (fibo 0) in
+let x = print (fibo 1) in
+let x = print (fibo 2) in
+let x = print (fibo 3) in
+let x = print (fibo 4) in
+let x = print (fibo 5) in
+let x = print (fibo 6) in
+let x = print (fibo 7) in
+print (fibo 8)