[PATCH] Forward to correct function in std::shared_mutex::unlock().

[Eelis]

Looks like a typo. :)

Index: libstdc++-v3/include/std/shared_mutex
===================================================================
--- libstdc++-v3/include/std/shared_mutex	(revision 226840)
+++ libstdc++-v3/include/std/shared_mutex	(working copy)
@@ -331,7 +331,7 @@
 
     void lock() { _M_impl.lock(); }
     bool try_lock() { return _M_impl.try_lock(); }
-    void unlock() { _M_impl.try_lock(); }
+    void unlock() { _M_impl.unlock(); }
 
     // Shared ownership