Misc: Warning fixes

src/util/cd_image_device.cpp

@@ -12,6 +12,8 @@
 #include <cmath>
 Log_SetChannel(CDImageDevice);
 
+#if defined(_WIN32)
+
 static constexpr u32 MAX_TRACK_NUMBER = 99;
 static constexpr int ALL_SUBCODE_SIZE = 96;
 
@@ -56,6 +58,8 @@ static void DeinterleaveSubcode(const u8* subcode_in, u8* subcode_out)
   }
 }
 
+#endif
+
 #if defined(_WIN32)
 
 // The include order here is critical.
@@ -540,4 +544,4 @@ bool CDImage::IsDeviceName(const char* filename)
   return false;
 }
 
-#endif
+#endif