libc: fast-forward for solaris `RTLD_DEFAULT`

diff --git a/src/liblibc b/src/liblibc
index 45d85899e99d33e291b2bf3259881b46cc5365d7..b0d62534d48b711c8978d1bbe8cca0558ae7b1cb 160000 (submodule)
--- a/src/liblibc
+++ b/src/liblibc
@@ -1 +1 @@
-Subproject commit 45d85899e99d33e291b2bf3259881b46cc5365d7
+Subproject commit b0d62534d48b711c8978d1bbe8cca0558ae7b1cb