MinGW on Linux uses lowercase include files
On Windows this doesn't matter since the filesystems are case-
insensitive, but building BoringSSL on Linux with MinGW has
case-sensitive filesystems.
Change-Id: Iefd319cfda89d2d1f8d43cea39c68295bfa65c83
diff --git a/src/crypto/thread.c b/src/crypto/thread.c
index f18bc13..024993e 100644
--- a/src/crypto/thread.c
+++ b/src/crypto/thread.c
@@ -61,7 +61,7 @@
#if defined(OPENSSL_WINDOWS)
#pragma warning(push, 3)
-#include <Windows.h>
+#include <windows.h>
#pragma warning(pop)
#endif