Fix for-loops

examples/loops.reid

@@ -1,12 +1,16 @@
 // Arithmetic, function calls and imports!
 
 import std::print;
-import std::from_str;
+import std::new_string;
+import std::add_num_to_str;
+import std::free_string;
 
 fn main() -> u32 {
-  let text = from_str("hello");
-  for i in 0 .. 10 {
-    print(&text)
+  for i in 0 .. 5 {
+    let mut text = new_string();
+    add_num_to_str(&mut text, i);
+    print(&text);
+    free_string(&mut text);
   }
 
   let mut num = 0;

reid/src/ast/process.rs

@@ -186,7 +186,7 @@ impl ast::Block {
                         counter_range.as_meta(module_id),
                     );
                     let mut block = block.into_mir(module_id);
-                    block.statements.insert(0, set_new);
+                    block.statements.push(set_new);
                     (
                         StmtKind::While(WhileStatement {
                             condition: mir::Expression(