plugins: remove check of NULL pointers before calling weechat_hashtable_free() (issue #865)

src/plugins/script/script-buffer.c

@@ -1179,8 +1179,7 @@ script_buffer_open ()
         &script_buffer_input_cb, NULL, NULL,
         &script_buffer_close_cb, NULL, NULL);
 
-    if (buffer_props)
-        weechat_hashtable_free (buffer_props);
+    weechat_hashtable_free (buffer_props);
 
     if (!script_buffer)
         return;

src/plugins/script/script-config.c

@@ -174,8 +174,7 @@ script_config_get_xml_filename ()
         weechat_hashtable_set (options, "directory", "cache");
     path = weechat_string_eval_path_home (
         weechat_config_string (script_config_scripts_path), NULL, NULL, options);
-    if (options)
-        weechat_hashtable_free (options);
+    weechat_hashtable_free (options);
     length = strlen (path) + 64;
     filename = malloc (length);
     if (filename)
@@ -208,8 +207,7 @@ script_config_get_script_download_filename (struct t_script_repo *script,
         weechat_hashtable_set (options, "directory", "cache");
     path = weechat_string_eval_path_home (
         weechat_config_string (script_config_scripts_path), NULL, NULL, options);
-    if (options)
-        weechat_hashtable_free (options);
+    weechat_hashtable_free (options);
     length = strlen (path) + 1 + strlen (script->name_with_extension)
         + ((suffix) ? strlen (suffix) : 0) + 1;
     filename = malloc (length);

src/plugins/script/script-repo.c

@@ -1391,8 +1391,7 @@ script_repo_file_read (int quiet)
         script_repo_free (script);
     free (locale);
     free (locale_language);
-    if (descriptions)
-        weechat_hashtable_free (descriptions);
+    weechat_hashtable_free (descriptions);
 
     return 1;
 }