clangd: Change Windows.h to windows.h.

pcc · pcc · commit 990514cec829 · 2019-04-17T03:02:18.000Z
This makes the file more cross compilation friendly.

llvm-svn: 358549
diff --git a/clang-tools-extra/clangd/Threading.cpp b/clang-tools-extra/clangd/Threading.cpp
@@ -10,7 +10,7 @@
 #elif defined(__APPLE__)
 #include <sys/resource.h>
 #elif defined (_WIN32)
-#include <Windows.h>
+#include <windows.h>
 #endif
 
 namespace clang {
