Fix last commit

Signed-off-by: falkTX <falktx@falktx.com>

distrho/extra/Mutex.hpp

@@ -30,7 +30,7 @@
 // FIXME make Mutex stop relying on pthread
 #ifdef _MSC_VER
 #define DISTRHO_OS_WINDOWS__TODO
-#warning DPF Mutex implementation is TODO on MSVC
+#pragma NOTE(DPF Mutex implementation is TODO on MSVC)
 #else
 #include <pthread.h>
 #endif