PrintAsClang: Stop calling getAllConformances() on protocols

Author: slavapestov

lib/PrintAsClang/DeclAndTypePrinter.cpp

@@ -1742,6 +1742,9 @@ class DeclAndTypePrinter::Implementation
     if (nominal->hasClangNode())
       return nullptr;
 
+    if (isa<ProtocolDecl>(nominal))
+      return nullptr;
+
     auto &ctx = nominal->getASTContext();
 
     // Dig out the ObjectiveCBridgeable protocol.