Use Float.compare in java equals

Summary: Handles nans. Also if the unit is undefined there is no need to check the value.

Reviewed By: astreet

Differential Revision: D4531805

fbshipit-source-id: 723e15381e9fa39837a4c99f726501eda26af11b

java/com/facebook/yoga/YogaValue.java

@@ -33,7 +33,9 @@ public class YogaValue {
   public boolean equals(Object other) {
     if (other instanceof YogaValue) {
       final YogaValue otherValue = (YogaValue) other;
-      return value == otherValue.value && unit == otherValue.unit;
+      if (unit == otherValue.unit) {
+        return unit == YogaUnit.UNDEFINED || Float.compare(value, otherValue.value) == 0;
+      }
     }
     return false;
   }