generator.ml: Fix string list memory leak

Parsed string lists are allocated by malloc, but were never freed.

diff --git a/src/generator.ml b/src/generator.ml
index 2e2b70e..433c60a 100755 (executable)
--- a/src/generator.ml
+++ b/src/generator.ml
@@ -6221,7 +6221,7 @@ and generate_fish_cmds () =
         | OptString n
         | FileIn n
         | FileOut n -> pr "  const char *%s;\n" n
-        | StringList n | DeviceList n -> pr "  char *const *%s;\n" n
+        | StringList n | DeviceList n -> pr "  char **%s;\n" n
         | Bool n -> pr "  int %s;\n" n
         | Int n -> pr "  int %s;\n" n
       ) (snd style);
@@ -6264,6 +6264,15 @@ and generate_fish_cmds () =
       generate_c_call_args ~handle:"g" style;
       pr ";\n";
 
+      List.iter (
+        function
+        | Pathname name | Device name | Dev_or_Path name | String name
+        | OptString name | FileIn name | FileOut name | Bool name
+        | Int name -> ()
+        | StringList name | DeviceList name ->
+            pr "  free_strings (%s);\n" name
+      ) (snd style);
+
       (* Check return value for errors and display command results. *)
       (match fst style with
        | RErr -> pr "  return r;\n"