(Coverity) Fix some resource leaks

input/input_autodetect.c

@@ -220,8 +220,12 @@ static bool input_autoconfigure_joypad_from_conf_dir(
    list = dir_list_new_special(path, DIR_LIST_AUTOCONFIG, "cfg");
 
    if (!list || !list->size)
+   {
+      if (list)
+         string_list_free(list);
       list = dir_list_new_special(settings->directory.autoconfig,
             DIR_LIST_AUTOCONFIG, "cfg");
+   }
 
    if(!list)
       return false;

libretro-common/formats/png/rpng.c

@@ -791,7 +791,7 @@ static struct rpng_process *rpng_process_init(rpng_t *rpng,
 
    inflate_buf = (uint8_t*)malloc(process->inflate_buf_size);
    if (!inflate_buf)
-      return NULL;
+      goto error;
 
    process->inflate_buf = inflate_buf;
    process->stream_backend->stream_set(
@@ -802,6 +802,11 @@ static struct rpng_process *rpng_process_init(rpng_t *rpng,
          process->inflate_buf);
 
    return process;
+
+error:
+   if (process)
+      free(process);
+   return NULL;
 }
 
 static bool read_chunk_header(uint8_t *buf, struct png_chunk *chunk)

libretro-db/query.c

@@ -995,6 +995,7 @@ void *libretrodb_query_compile(libretrodb_t *db,
    if (!q->root.func)
    {
       raise_unexpected_eof(buff.offset, error);
+      libretrodb_query_free(q);
       return NULL;
    }
    goto success;

list_special.c

@@ -126,7 +126,7 @@ struct string_list *string_list_new_special(enum string_list_type type,
    struct string_list *s            = string_list_new();
 
    if (!s || !len)
-      return NULL;
+      goto error;
 
    attr.i = 0;
    *len   = 0;

menu/menu_displaylist.c

@@ -1949,6 +1949,8 @@ static int menu_displaylist_parse_database_entry(menu_displaylist_info_t *info)
    return 0;
 
 error:
+   if (db_info)
+      database_info_list_free(db_info);
    playlist_free(playlist);
 
    return -1;

tasks/task_image.c

@@ -394,6 +394,7 @@ error:
    rarch_task_image_load_free(t);
    if (t)
       free(t);
+   nbio_free(handle);
    if (nbio)
       free(nbio);