Fixed an argument list bug, found a casting bug

scripts/fib.toy

@@ -0,0 +1,12 @@
+fn fib(n : int) {
+    if (n < 2) {
+        return n;
+    }
+
+    return fib(n-1) + fib(n-2);
+}
+
+for (var i = 0; i < 40; i++) {
+	var res = fib(i);
+	print (string)i + ": " + (string)res;
+}

source/interpreter.c

@@ -1450,6 +1450,13 @@ static bool execFnCall(Interpreter* interpreter) {
 		}
 
 		Literal arg = popLiteralArray(&arguments);
+
+		if (IS_IDENTIFIER(arg)) {
+			Literal idn = arg;
+			parseIdentifierToValue(interpreter, &arg);
+			freeLiteral(idn);
+		}
+
 		if (!setScopeVariable(inner.scope, paramArray->literals[i], arg, false)) {
 			printf(ERROR "[internal] Could not define parameter (bad type?)\n" RESET);
 			//free, and skip out