Fix memory corruption
diff --git a/src/cpp/client/secure_credentials.cc b/src/cpp/client/secure_credentials.cc
index 21445c9..7fc315b 100644
--- a/src/cpp/client/secure_credentials.cc
+++ b/src/cpp/client/secure_credentials.cc
@@ -206,8 +206,8 @@
std::vector<grpc_metadata> md;
for (auto it = metadata.begin(); it != metadata.end(); ++it) {
grpc_metadata md_entry;
- md_entry.key = SliceReferencingString(it->first);
- md_entry.value = SliceReferencingString(it->second);
+ md_entry.key = SliceFromCopiedString(it->first);
+ md_entry.value = SliceFromCopiedString(it->second);
md_entry.flags = 0;
md.push_back(md_entry);
}