fileinfo: Capture more sizes for test as delivered by AppVeyor

Signed-off-by: Anatol Belski <ab@php.net>

Author: weltling

ext/fileinfo/tests/bug78987.phpt

@@ -15,10 +15,10 @@ $map = array(
 	262144 => 2097152,
 	524288 => 4194304,
 	1048576 => 4194304,
-	2097152 => 6295552,
-	4194304 => 10493952,
-	8388608 => 16785408,
-	16777216 => 29368320,
+	2097152 => 8388608,
+	4194304 => 14680064,
+	8388608 => 20971520,
+	16777216 => 33554432,
 );
 for($size = $minSize; $size <= $maxSize; $size *= 2) {
 	$content = str_repeat('0', $size);