Fix missing .gitignore in empty dirs on dir rename

The commandline option --empty-dirs now also has effect when a directory
is moved in svn.

Author: mbaschnitzi

src/svn.cpp

@@ -930,6 +930,10 @@ int SvnRevision::exportInternal(const char *key, const svn_fs_path_change2_t *ch
 
         if (dumpDirectory) {
             recursiveDumpDir(txn, fs, fs_root, key, path, pool, revnum, rule, matchRules, ruledebug, ignoreSet);
+
+            if (CommandLineParser::instance()->contains("empty-dirs")) {
+                addGitIgnoreOnBranch(pool, key, path, fs_root, txn);
+            }
         }
     }