Update libc to fix sparc compiles

diff --git a/src/liblibc b/src/liblibc
index d64716407e3ee430fce7a008cc7d19a3072dca6c..04a5e75c99dc92afab490c38fcbbeac9b4bc8104 160000 (submodule)
--- a/src/liblibc
+++ b/src/liblibc
@@ -1 +1 @@
-Subproject commit d64716407e3ee430fce7a008cc7d19a3072dca6c
+Subproject commit 04a5e75c99dc92afab490c38fcbbeac9b4bc8104