Bigger partname to avoid MDEV-9779

storage/connect/ha_connect.h

@@ -554,7 +554,7 @@ int index_prev(uchar *buf);
   PVAL          sdvalin4;             // Used to convert date values
   PVAL          sdvalout;             // Used to convert date values
   bool          istable;              // True for table handler
-  char          partname[64];         // The partition name
+  char          partname[128];        // The partition name
   MODE          xmod;                 // Table mode
   XINFO         xinfo;                // The table info structure
   bool          valid_info;           // True if xinfo is valid