Clang: Fix call of already destroyed virtual table

Task-number: QTCREATORBUG-16597
Change-Id: Ic5391ba7529de5b5ef5de260f4a5e831003ffbf6
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
Reviewed-by: Tim Jenssen <tim.jenssen@theqtcompany.com>

src/libs/clangbackendipc/clangcodemodelconnectionclient.cpp

@@ -35,6 +35,11 @@ ClangCodeModelConnectionClient::ClangCodeModelConnectionClient(
 
 }
 
+ClangCodeModelConnectionClient::~ClangCodeModelConnectionClient()
+{
+    finishProcess();
+}
+
 ClangCodeModelServerProxy &ClangCodeModelConnectionClient::serverProxy()
 {
     return serverProxy_;