Merge pull request #11786 from slavapestov/fix-class-anyobject-4.0

Fix printing of class-constrained protocols [4.0]
diff --git a/include/swift/Basic/LangOptions.h b/include/swift/Basic/LangOptions.h
index bbb9b5e..191d9f1 100644
--- a/include/swift/Basic/LangOptions.h
+++ b/include/swift/Basic/LangOptions.h
@@ -173,7 +173,7 @@
 
     /// \brief The upper bound to number of sub-expressions unsolved
     /// before termination of the shrink phrase of the constraint solver.
-    unsigned SolverShrinkUnsolvedThreshold = 5;
+    unsigned SolverShrinkUnsolvedThreshold = 10;
 
     /// The maximum depth to which to test decl circularity.
     unsigned MaxCircularityDepth = 500;