playback: fix seekbar crash

Fix an edge case where if the total duration ends up being zero,
the app will end up crashing at the playback screen. Thank SeekBar
for deciding that it's perfectly okay to crash instead of decay
gracefully when valueTo is 0.

app/src/main/java/org/oxycblt/auxio/playback/PlaybackSeekBar.kt

@@ -29,6 +29,7 @@ import org.oxycblt.auxio.databinding.ViewSeekBarBinding
 import org.oxycblt.auxio.music.toDuration
 import org.oxycblt.auxio.util.inflater
 import org.oxycblt.auxio.util.resolveAttr
+import kotlin.math.max
 
 /**
  * A custom view that bundles together a seekbar with a current duration and a total duration.
@@ -67,7 +68,7 @@ class PlaybackSeekBar @JvmOverloads constructor(
     }
 
     fun setDuration(seconds: Long) {
-        binding.seekBar.valueTo = seconds.toFloat()
+        binding.seekBar.valueTo = max(seconds.toFloat(), 1f)
         binding.playbackSongDuration.text = seconds.toDuration()
     }