For PR351:

Add a needed include.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19042 91177308-0d34-0410-b5e6-96231b3b80d8

lib/System/Unix/DynamicLibrary.cpp

@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "Unix.h"
+#include "sys/stat.h"
 
 namespace llvm {
 using namespace sys;