leak: Free list of drives and mountpoints in guestfish.

Previously the list of -a, -d, -m, -N parameters were leaked.  This
change frees them explicitly.

This is not such an important fix since guestfish is a one-shot
program, but it aids in finding other leaks in future.

(Found by valgrind).

1 files changed, 13 insertions, 1 deletions

diff --git a/fish/prep.c b/fish/prep.c
index 8b830719..9a6b64ed 100644
--- a/fish/prep.c
+++ b/fish/prep.c
@@ -116,7 +116,7 @@ Use 'guestfish -N help' to list possible values for the -N parameter.\n"),
   }
 
   for (i = 0; i < data->prep->nr_params; ++i)
-    data->params[i] = data->prep->params[i].pdefault;
+    data->params[i] = bad_cast (data->prep->params[i].pdefault);
 
   /* Parse the optional parameters. */
   const char *p = type_string + len;
@@ -167,3 +167,15 @@ prep_error (prep_data *data, const char *filename, const char *fs, ...)
 
   exit (EXIT_FAILURE);
 }
+
+void
+free_prep_data (prep_data *data)
+{
+  size_t i;
+
+  for (i = 0; i < data->prep->nr_params; ++i)
+    if (data->params[i] != data->prep->params[i].pdefault)
+      free (data->params[i]);
+  free (data->params);
+  free (data);
+}