Merge commit 'c246b0b4' into release/2.4

* commit 'c246b0b4':
  avresample: Make sure the even check does not overflow
Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavresample/audio_mix_matrix.c

@@ -60,7 +60,7 @@
 
 static av_always_inline int even(uint64_t layout)
 {
-    return (!layout || (layout & (layout - 1)));
+    return (!layout || !!(layout & (layout - 1)));
 }
 
 static int sane_layout(uint64_t layout)