Restoring authorship annotation for <pzuev@yandex-team.ru>. Commit 2 of 2.

util/system/datetime.h

@@ -8,7 +8,7 @@
     #pragma intrinsic(__rdtsc)
 #endif // _win_
 
-#if defined(_darwin_) && !defined(_x86_) 
+#if defined(_darwin_) && !defined(_x86_)
     #include <mach/mach_time.h>
 #endif