unit: set default working directory to the user's home directory when running in user mode

src/core/socket.c

@@ -372,6 +372,10 @@ static int socket_load(Unit *u) {
                 if (UNIT(s)->default_dependencies)
                         if ((r = socket_add_default_dependencies(s)) < 0)
                                 return r;
+
+                r = unit_patch_working_directory(UNIT(s), &s->exec_context);
+                if (r < 0)
+                        return r;
         }
 
         return socket_verify(s);