msvidc32: Define a preprocessor variable before it is tested

[Andrew Talbot]

Changelog:
    msvidc32: Define a preprocessor variable before it is tested.

diff --git a/dlls/msvidc32/msvideo1.c b/dlls/msvidc32/msvideo1.c
index 9de2a2d..72fa56b 100644
--- a/dlls/msvidc32/msvideo1.c
+++ b/dlls/msvidc32/msvideo1.c
@@ -47,6 +47,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(msvidc32);
 
 static HINSTANCE MSVIDC32_hModule;
 
+#define ORIGINAL    0
+
 #define CRAM_MAGIC mmioFOURCC('C', 'R', 'A', 'M')
 #define MSVC_MAGIC mmioFOURCC('M', 'S', 'V', 'C')
 #define WHAM_MAGIC mmioFOURCC('W', 'H', 'A', 'M')