drizzledump dies with dashes in table names

When running drizzledump on a database with dashes in some of the tablenames it dies with.

-- Retrieving indexes for my-db-table...
Error executing query: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-db-table' at line 1

This simple patch should do the trick

--- client/drizzledump_mysql.cc
+++ client/drizzledump_mysql.cc
@@ -269,8 +269,9 @@
   if (verbose)
     std::cerr << _("-- Retrieving indexes for ") << tableName << "..." << std::endl;

- query="SHOW INDEXES FROM ";
+ query="SHOW INDEXES FROM `";
   query.append(tableName);
+ query.append("`");