Canonicalize stills' NIA conversion's loops to 0
@@ -9,8 +9,8 @@ e651a889 test/data/animated-red-blue.000002.nie
f9a10dac test/data/artificial-gif/background-color.gif
36e7d9c7 test/data/artificial-gif/empty-palette.gif
db4c30eb test/data/artificial-gif/frame-out-of-bounds.gif
-fdcc644f test/data/artificial-gif/metadata-empty.gif
-fdcc644f test/data/artificial-gif/metadata-full.gif
+f2dc2c43 test/data/artificial-gif/metadata-empty.gif
+f2dc2c43 test/data/artificial-gif/metadata-full.gif
a1a9b56d test/data/artificial-gif/multiple-graphic-controls.gif
046a2d07 test/data/artificial-gif/multiple-loop-counts.gif
ba6e48f8 test/data/artificial-gif/no-frames.gif
