Replace String comparisons with "", String() to is_empty()

Also:
- Adds two stress tests to test_string.h
- Changes to .empty() on std::strings

1 files changed, 1 insertions, 1 deletions

diff --git a/scene/animation/animation_player.cpp b/scene/animation/animation_player.cpp
index b9435b6692..d603106696 100644
--- a/scene/animation/animation_player.cpp
+++ b/scene/animation/animation_player.cpp
@@ -1416,7 +1416,7 @@ bool AnimationPlayer::is_playing() const {
 }
 
 void AnimationPlayer::set_current_animation(const String &p_anim) {
-	if (p_anim == "[stop]" || p_anim == "") {
+	if (p_anim == "[stop]" || p_anim.is_empty()) {
 		stop();
 	} else if (!is_playing() || playback.assigned != p_anim) {
 		play(p_anim);