Extensions: they can also have a short description

This is "shortdesc" in the Lua descriptor

include/vlc_extensions.h

@@ -42,6 +42,7 @@ typedef struct extension_t {
     char *psz_version;        /**< Version (ro) */
     char *psz_url;            /**< A URL to the official page (ro) */
     char *psz_description;    /**< Full description (ro) */
+    char *psz_shortdescription; /**< Short description (eg. 1 line)  (ro) */
 
     extension_sys_t *p_sys;   /**< Reserved for the manager module */
 } extension_t;

modules/misc/lua/extension.c

@@ -355,6 +355,18 @@ int ScanLuaCallback( vlc_object_t *p_this, const char *psz_script,
             }
             lua_pop( L, 1 );
 
+            /* Get short description */
+            lua_getfield( L, -1, "shortdesc" );
+            if( lua_isstring( L, -1 ) )
+            {
+                p_ext->psz_shortdescription = strdup( luaL_checkstring( L, -1 ) );
+            }
+            else
+            {
+                p_ext->psz_shortdescription = NULL;
+            }
+            lua_pop( L, 1 );
+
             /* Get URL */
             lua_getfield( L, -1, "url" );
             if( lua_isstring( L, -1 ) )