fix: int -> int32_t in test case

Author: Wybxc

tests/codegen/params_count.rs

@@ -5,7 +5,7 @@
 extern crate mini_core;
 
 // expect three int params
-// CHECK: {{((int .*,?\s?){3})}}
+// CHECK: {{((int32_t .*,?\s?){3})}}
 #[no_mangle]
 pub fn foo(_x: i32, _y: i32, _z: i32) -> i32 {
     0