- moved refreshfreq variable to a common place.

src/common/engine/i_interface.cpp

@@ -1,3 +1,4 @@
 #include "i_interface.h"
 
 SystemCallbacks *sysCallbacks;
+double refreshfreq;

src/win32/hardware.cpp

@@ -139,7 +139,7 @@ void I_InitGraphics ()
 	else
 #endif
 #ifdef HAVE_VULKAN
-	else if (vid_preferbackend == 1)
+	if (vid_preferbackend == 1)
 	{
 		// first try Vulkan, if that fails OpenGL
 		try

src/win32/i_input.cpp

@@ -136,7 +136,7 @@ extern bool AppActive;
 
 int SessionState = 0;
 int BlockMouseMove; 
-double refreshfreq;
+extern double refreshfreq;
 
 static bool EventHandlerResultForNativeMouse;