[libcxx] r342361 - Fix typo

[Fangrui Song]

Author: maskray
Date: Mon Sep 17 00:40:42 2018
New Revision: 342361

URL: http://llvm.org/viewvc/llvm-project?rev=342361&view=rev
Log:
Fix typo

Modified:
    libcxx/trunk/include/__threading_support

Modified: libcxx/trunk/include/__threading_support
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/include/__threading_support?rev=342361&r1=342360&r2=342361&view=diff
==============================================================================
--- libcxx/trunk/include/__threading_support (original)
+++ libcxx/trunk/include/__threading_support Mon Sep 17 00:40:42 2018
@@ -70,7 +70,7 @@ typedef pthread_t __libcpp_thread_id;
 
 typedef pthread_t __libcpp_thread_t;
 
-// Thrad Local Storage
+// Thread Local Storage
 typedef pthread_key_t __libcpp_tls_key;
 
 #define _LIBCPP_TLS_DESTRUCTOR_CC