warning fixes by Dominik Mierzejewski <dominik@rangers.eu.org>

Originally committed as revision 7221 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

postproc/postprocess_template.c

@@ -2449,6 +2449,8 @@ static void RENAME(postProcess)(uint8_t src[], int srcStride, uint8_t dst[], int
  * Copies a block from src to dst and fixes the blacklevel
  * levelFix == 0 -> dont touch the brighness & contrast
  */
+#undef SCALED_CPY
+
 static inline void RENAME(blockCopy)(uint8_t dst[], int dstStride, uint8_t src[], int srcStride,
 	int levelFix)
 {