SERVER-8130 Fix invalid access in textSearchEnabled check

Bug introduced in fts_index.cpp, FTSIndexPlugin::adjustIndexSpec()
(not changed by diff):

 69|            StringData desc  = cc().desc();

Previously, Client::desc() returned std::string, so desc._data
became a dangling pointer to destroyed temporary cc().desc().
Resolved by changing return type of Client::desc() to StringData.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/mongo/db/client.h b/src/mongo/db/client.h
index 1649a22d20d..67063ddb147 100644
--- a/src/mongo/db/client.h
+++ b/src/mongo/db/client.h
@@ -84,7 +84,7 @@ namespace mongo {
         Context* getContext() const { return _context; }
         Database* database() const {  return _context ? _context->db() : 0; }
         const char *ns() const { return _context->ns(); }
-        const std::string desc() const { return _desc; }
+        const StringData desc() const { return _desc; }
         void setLastOp( OpTime op ) { _lastOp = op; }
         OpTime getLastOp() const { return _lastOp; }