Pass primitives by value

Summary:
@public

Passes all `float`, `bool`, etc. by value, not by reference.

Reviewed By: astreet

Differential Revision: D13153500

fbshipit-source-id: 95529bc2efcff144044e2c25087915b2b7ede179

yoga/Utils.h

@@ -91,7 +91,7 @@ bool YGFloatArrayEqual(
 }
 
 // This function returns 0 if YGFloatIsUndefined(val) is true and val otherwise
-float YGFloatSanitize(const float& val);
+float YGFloatSanitize(const float val);
 
 // This function unwraps optional and returns YGUndefined if not defined or
 // op.value otherwise