spudec.c: mark a parameter const

Mark constant sws_spu_image() parameter as const, fixes the warning:
spudec.c:874: warning: passing argument 2 of 'sws_scale' from incompatible pointer type

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31959 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 2 insertions, 2 deletions

diff --git a/spudec.c b/spudec.c
index 28046444af..5e39846fe6 100644
--- a/spudec.c
+++ b/spudec.c
@@ -852,8 +852,8 @@ static void scale_image(int x, int y, scale_pixel* table_x, scale_pixel* table_y
 }
 
 static void sws_spu_image(unsigned char *d1, unsigned char *d2, int dw, int dh,
-                          int ds, unsigned char *s1, unsigned char *s2, int sw,
-                          int sh, int ss)
+                          int ds, const unsigned char* s1, unsigned char* s2,
+                          int sw, int sh, int ss)
 {
 	struct SwsContext *ctx;
 	static SwsFilter filter;