Fixed inverse constant

Updated inverse stretch affected distance to
be inverse the affected distance not the actual
stretch in the x/y direction

Bug: 183768138
Test: Re-ran CTS tests
Change-Id: Id3784e8902aa7dc199e10f228eeee5c24f968831
diff --git a/libs/hwui/effects/StretchEffect.cpp b/libs/hwui/effects/StretchEffect.cpp
index bd1c154..d7162b9 100644
--- a/libs/hwui/effects/StretchEffect.cpp
+++ b/libs/hwui/effects/StretchEffect.cpp
@@ -186,8 +186,8 @@
     float normOverScrollDistY = mStretchDirection.y();
     float distanceStretchedX = CONTENT_DISTANCE_STRETCHED / (1 + abs(normOverScrollDistX));
     float distanceStretchedY = CONTENT_DISTANCE_STRETCHED / (1 + abs(normOverScrollDistY));
-    float inverseDistanceStretchedX = 1.f / distanceStretchedX;
-    float inverseDistanceStretchedY = 1.f / distanceStretchedY;
+    float inverseDistanceStretchedX = 1.f / CONTENT_DISTANCE_STRETCHED;
+    float inverseDistanceStretchedY = 1.f / CONTENT_DISTANCE_STRETCHED;
     float diffX = distanceStretchedX - CONTENT_DISTANCE_STRETCHED;
     float diffY = distanceStretchedY - CONTENT_DISTANCE_STRETCHED;