lli: Plug leaks in the remote target external implementation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192031 91177308-0d34-0410-b5e6-96231b3b80d8

tools/lli/Windows/RemoteTargetExternal.inc

@@ -29,4 +29,7 @@ int RemoteTargetExternal::ReadBytes(void *Data, size_t Size) {
 void RemoteTargetExternal::Wait() {
 }
 
+RemoteTargetExternal::~RemoteTargetExternal() {
+}
+
 } // namespace llvm