Remove the errno check when hashing floating point numbers. It's not really

needed and was causing problems on the Microsoft Windows Smarthone Edition
platform. Fixes #1064.



[SVN r38877]

libs/functional

@@ -1 +1 @@
-Subproject commit 5f90cf05d31bad40dbf5d37ad79badd005377865
+Subproject commit afc3267102846293de52ec11254f7786e1ab9fec