[Windows] Include ErrorHandling.h

Include ErrorHandling.h for mapWindowsError.

llvm-svn: 365420

Author: JDevlieghere

lldb/source/Host/common/ThreadLauncher.cpp

@@ -17,6 +17,8 @@
 #include "lldb/Host/windows/windows.h"
 #endif
 
+#include "llvm/Support/ErrorHandling.h"
+
 using namespace lldb;
 using namespace lldb_private;