Fix clang-tidy performance warnings.
* Use const reference parameter type to avoid unnecessary copy.
* Use more efficient overloaded string methods.
Bug: 30407689
Bug: 30411878
Change-Id: Iefab05c077367f272abf545036b853e8a295c8cd
Test: build with WITH_TIDY=1
diff --git a/minui/minui.h b/minui/minui.h
index e3bc005..b2648fb 100644
--- a/minui/minui.h
+++ b/minui/minui.h
@@ -67,7 +67,7 @@
int ev_init(ev_callback input_cb, void* data);
void ev_exit();
int ev_add_fd(int fd, ev_callback cb, void* data);
-void ev_iterate_available_keys(std::function<void(int)> f);
+void ev_iterate_available_keys(const std::function<void(int)>& f);
int ev_sync_key_state(ev_set_key_callback set_key_cb, void* data);
// 'timeout' has the same semantics as poll(2).