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_blend_tree.cpp b/scene/animation/animation_blend_tree.cpp
index d6c5d0b51c..8f644face5 100644
--- a/scene/animation/animation_blend_tree.cpp
+++ b/scene/animation/animation_blend_tree.cpp
@@ -57,7 +57,7 @@ void AnimationNodeAnimation::_validate_property(PropertyInfo &property) const {
 			}
 			anims += String(names[i]);
 		}
-		if (anims != String()) {
+		if (!anims.is_empty()) {
 			property.hint = PROPERTY_HINT_ENUM;
 			property.hint_string = anims;
 		}