Fix memleak: FREE(assign->dest.output)

include/data.h

@@ -573,7 +573,7 @@ struct Assignment {
     /** the criteria to check if a window matches */
     Match match;
 
-    /** destination workspace/command, depending on the type */
+    /** destination workspace/command/output, depending on the type */
     union {
         char *command;
         char *workspace;

src/config.c

@@ -103,6 +103,8 @@ void load_configuration(xcb_connection_t *conn, const char *override_configpath,
                 FREE(assign->dest.workspace);
             else if (assign->type == A_COMMAND)
                 FREE(assign->dest.command);
+            else if (assign->type == A_TO_OUTPUT)
+                FREE(assign->dest.output);
             match_free(&(assign->match));
             TAILQ_REMOVE(&assignments, assign, assignments);
             FREE(assign);