Fix wsssht execution to use execvp for PATH search

- Replace execl with execvp to properly find wsssht in PATH
- Fixes 'No such file or directory' error

wssshd2/web_proxy.c

@@ -238,7 +238,8 @@ static wsssht_process_t *find_or_create_wsssht_process(const char *hostname, con
             wsssht_path = "wsssht";
         }
 
-        execl(wsssht_path, "wsssht", "--daemon", target, NULL);
+        char *argv[] = {"wsssht", "--daemon", target, NULL};
+        execvp("wsssht", argv);
         exit(1); // Should not reach here
     } else if (pid > 0) {
         proc->pid = pid;