always coerce aspect ratio

app/src/main/java/com/keylesspalace/tusky/util/AttachmentHelper.kt

@@ -28,9 +28,8 @@ fun List<Attachment>.aspectRatios(): List<Double> {
     return map { attachment ->
         // clamp ratio between 2:1 & 1:2, defaulting to 16:9
         val size = (attachment.meta?.small ?: attachment.meta?.original) ?: return@map 1.7778
-        if (size.aspect > 0) return@map size.aspect
+        if (size.aspect > 0) return@map size.aspect.coerceIn(0.5, 2.0)
         if (size.width == 0 || size.height == 0) return@map 1.7778
-        val aspect = size.width.toDouble() / size.height
+        (size.width.toDouble() / size.height).coerceIn(0.5, 2.0)
-        aspect.coerceIn(0.5, 2.0)
     }
 }