Clear mForceTraversal 

Fixes regression from 6bdec7d9c62ed47f9fd0e0cb9e59f0cbe48b4bae

Change-Id: I839682e5daa407994de3714803e1e92c0bbbc4fe
Test: go/wm-smoke
Fixes: 188546439
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 442b4bb..a829b12 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2878,6 +2878,7 @@
     // Commit layer transactions. This needs to happen after display transactions are
     // committed because some geometry logic relies on display orientation.
     if ((transactionFlags & eTraversalNeeded) || mForceTraversal || displayTransactionNeeded) {
+        mForceTraversal = false;
         mCurrentState.traverse([&](Layer* layer) {
             uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
             if (!trFlags && !displayTransactionNeeded) return;