shithub: nvi

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don't crash when no video streams found

--- a/nvi.c

+++ b/nvi.c

@@ -130,7 +130,8 @@

 		}

 		if(fv == nil)

 			fv = bv;

-		if(fa == nil && (fv->included & Iaudio) == 0) /* no audio and video stream doesn't have it either */

+		/* no audio and video stream doesn't have it either */

+		if(fa == nil && (fv == nil || (fv->included & Iaudio) == 0))

 			fa = ba;

 		i = 0;