avfilter/f_sidedata: fix Wtautological-constant-out-of-range-compare

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

diff --git a/libavfilter/f_sidedata.c b/libavfilter/f_sidedata.c
index 381da5a0528bb2896b05cf199e8eed6bcdcb9efa..4210dcac4c2559fab52b62d417b324677deb04a2 100644 (file)
--- a/libavfilter/f_sidedata.c
+++ b/libavfilter/f_sidedata.c
@@ -39,7 +39,7 @@ typedef struct SideDataContext {
     const AVClass *class;
 
     int mode;
-    enum AVFrameSideDataType type;
+    int type;   // enum AVFrameSideDataType or -1 for delete side data mode
 } SideDataContext;
 
 #define OFFSET(x) offsetof(SideDataContext, x)