Back out "[Yoga] Remove comparison to YGUndefined *and* 0.0f"

Summary: Original commit changeset: 13c8f24e1bc8

Reviewed By: fabiomassimo

Differential Revision: D15583502

fbshipit-source-id: efc6175f6c4925a383fea723195c073f49e2eff1

yoga/Yoga.cpp

@@ -2861,8 +2861,11 @@ static void YGNodelayoutImpl(
         availableInnerMainDim = maxInnerMainDim;
       } else {
         if (!node->getConfig()->useLegacyStretchBehaviour &&
-            (collectedFlexItemsValues.totalFlexGrowFactors == 0 ||
-             node->resolveFlexGrow() == 0)) {
+            ((YGFloatIsUndefined(
+                  collectedFlexItemsValues.totalFlexGrowFactors) &&
+              collectedFlexItemsValues.totalFlexGrowFactors == 0) ||
+             (YGFloatIsUndefined(node->resolveFlexGrow()) &&
+              node->resolveFlexGrow() == 0))) {
           // If we don't have any children to flex or we can't flex the node
           // itself, space we've used is all space we need. Root node also
           // should be shrunk to minimum