Reset the diagnostic client on recovery too.

lib/Interpreter/ASTNodeEraser.cpp

@@ -791,6 +791,7 @@ namespace cling {
 #endif
 
     m_Sema->getDiagnostics().Reset();
+    m_Sema->getDiagnostics().getClient()->clear();
 
     // Cleanup the module from unused global values.
     //llvm::ModulePass* globalDCE = llvm::createGlobalDCEPass();

test/CodeGeneration/VTables.C

@@ -1,4 +1,4 @@
-// RUN: cat %s | %cling | FileCheck %s
+// RUN: cat %s | %cling -Xclang -verify | FileCheck %s
 // XFAIL:*
 
 // Test whether the interpreter is able to generate properly the symbols