Borrowed from the curlftpfs_0.9.2-5 Debian package.

Fix a memory leak when cache is disabled. Closes: #614347.
diff -ur curlftpfs-0.9.2/cache.c curlftpfs-0.9.2-olexat/cache.c
--- curlftpfs-0.9.2/cache.c	2008-04-30 01:03:09.000000000 +0200
+++ curlftpfs-0.9.2-olexat/cache.c	2011-02-04 16:43:05.000000000 +0100
@@ -25,7 +25,7 @@
     time_t last_cleaned;
 };
 
-static struct cache cache;
+struct cache cache;
 
 struct node {
     struct stat stat;
diff -ur curlftpfs-0.9.2/ftpfs-ls.c curlftpfs-0.9.2-olexat/ftpfs-ls.c
--- curlftpfs-0.9.2/ftpfs-ls.c	2008-04-23 12:55:41.000000000 +0200
+++ curlftpfs-0.9.2-olexat/ftpfs-ls.c	2011-02-07 17:23:37.000000000 +0100
@@ -25,6 +25,13 @@
 #include "charset_utils.h"
 #include "ftpfs-ls.h"
 
+struct cache {
+    int on;
+    char incomplete[];
+};
+
+extern struct cache cache;
+
 static int parse_dir_unix(const char *line,
                           struct stat *sbuf,
                           char *file,
@@ -243,8 +256,10 @@
           reallink = g_strdup(link);
         }
         int linksize = strlen(reallink);
-        cache_add_link(full_path, reallink, linksize+1);
-        DEBUG(1, "cache_add_link: %s %s\n", full_path, reallink);
+        if (cache.on) {
+          cache_add_link(full_path, reallink, linksize+1);
+          DEBUG(1, "cache_add_link: %s %s\n", full_path, reallink);
+        }
         if (linkbuf && linklen) {
           if (linksize > linklen) linksize = linklen - 1;
           strncpy(linkbuf, reallink, linksize);
@@ -257,8 +272,10 @@
         DEBUG(1, "filler: %s\n", file);
         filler(h, file, &stat_buf);
       } else {
-        DEBUG(1, "cache_add_attr: %s\n", full_path);
-        cache_add_attr(full_path, &stat_buf);
+        if (cache.on) {
+          DEBUG(1, "cache_add_attr: %s\n", full_path);
+          cache_add_attr(full_path, &stat_buf);
+        }
       }
 
       DEBUG(2, "comparing %s %s\n", name, file);