Fix removed lines from merge

src/opcodes/opcodes.cairo

@@ -205,6 +205,10 @@ pub mod Opcode {
     fn opcode_max(ref engine: Engine) {
         let a = engine.dstack.pop_int();
         let b = engine.dstack.pop_int();
-        engine.dstack.push_int(if a > b { a } else { b });
+        engine.dstack.push_int(if a > b {
+            a
+        } else {
+            b
+        });
     }
 }

src/opcodes/tests/test_opcodes.cairo

@@ -52,6 +52,7 @@ fn test_op_add() {
     assert_eq!(dstack, expected_stack.span(), "Stack is not equal to expected");
 }
 
+#[test]
 fn test_op_max() {
     let program = "OP_1 OP_0 OP_MAX";
     let mut compiler = CompilerTraitImpl::new();
@@ -67,6 +68,7 @@ fn test_op_max() {
 
     let expected_stack = array!["\0\0\0\0\0\0\0\x01"];
     assert_eq!(dstack, expected_stack.span(), "Stack is not equal to expected");
+}
 
 fn test_op_depth_empty_stack() {
     let program = "OP_DEPTH";