[fusl] Update fusl

fusl/src/ldso/dlinfo.c

 #define _GNU_SOURCE
 #include <dlfcn.h>
 
-int __dlinfo(void *, int, void *);
+__attribute__((__visibility__("hidden")))
+int __dl_invalid_handle(void *);
+
+__attribute__((__visibility__("hidden")))
+void __dl_seterr(const char *, ...);
 
 int dlinfo(void *dso, int req, void *res)
 {
-        return __dlinfo(dso, req, res);
+        if (__dl_invalid_handle(dso)) return -1;
+        if (req != RTLD_DI_LINKMAP) {
+                __dl_seterr("Unsupported request %d", req);
+                return -1;
+        }
+        *(struct link_map **)res = dso;
+        return 0;
 }