File kalibrate-rtl-fix-MinGW-build.diff of Package mingw64-kalibrate-rtl

diff --git a/src/circular_buffer.h b/src/circular_buffer.h
index 305dcdc..2faae84 100644
--- a/src/circular_buffer.h
+++ b/src/circular_buffer.h
@@ -46,7 +46,7 @@
 
 #include <pthread.h>
 #ifdef _WIN32
-#include <Windows.h>
+#include <windows.h>
 #endif
 
 class circular_buffer {