Fix two examples, break one

examples/array_structs.reid

@@ -16,6 +16,9 @@ fn test() -> Test {
 fn main() -> u32 {
     let mut value = test();
 
+    let beep = [2, 3, 4];
+    let boop = 3;
+
     let mut a = &mut value;
 
     *a.second[2] = 5;

examples/loops.reid

@@ -9,8 +9,8 @@ fn main() -> u32 {
   for i in 0 .. 15 {
     let mut text = from_str("num: ");
     add_num_to_str(&mut text, i);
-    print(&text);
-    free_string(&mut text);
+    print(text);
+    free_string(&text);
   }
 
   let mut num = 0;

examples/std_test.reid

@@ -6,7 +6,7 @@ import std::int_div;
 fn main() -> i32 {
     let hello = from_str("hello world");
 
-    print(&hello);
+    print(hello);
 
     return int_div(15, 5).quotient;
 }