Fixes: libswscale/swscale_unscaled.c:916:20: runtime error: applying zero 
offset to null pointer
Signed-off-by: James Almer <jamr...@gmail.com>
---
 libswscale/swscale_unscaled.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c
index 6d8d277582..c235269d54 100644
--- a/libswscale/swscale_unscaled.c
+++ b/libswscale/swscale_unscaled.c
@@ -912,7 +912,7 @@ static int Rgb16ToPlanarRgb16Wrapper(SwsInternal *c, const 
uint8_t *const src[],
         return srcSliceH;
     }
 
-    for(i=0; i<4; i++) {
+    for (i = 0; i < 4 && dst[i]; i++) {
         dst2013[i] += stride2013[i] * srcSliceY / 2;
         dst1023[i] += stride1023[i] * srcSliceY / 2;
     }
-- 
2.50.1

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