Fix document picker null name crash

[Davedeji]

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[marcprux]

This looks good! Can you explain the circumstances around the crash that you were experiencing?

[Davedeji]

This looks good! Can you explain the circumstances around the crash that you were experiencing?

Yeah, forgot to make a screen recording. pretty much my app allows users to upload audio files, while running on android I tried to upload files from the downloads folder and as soon as the file was selected the app would crash.
Crash Logs below similar to the original filed issue:

FATAL EXCEPTION: main
Process: com.livetrackz.android, PID: 6981
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1340283470, result=-1, data=Intent { dat=content://com.android.providers.downloads.documents/... flg=0x43 }} to activity {com.livetrackz.android/live.trackz.MainActivity}: java.lang.NullPointerException
	at android.app.ActivityThread.deliverResults(ActivityThread.java:5527)
	at android.app.ActivityThread.handleSendResult(ActivityThread.java:5566)
	at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:67)
	at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45)
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139)
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96)
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2443)
	at android.os.Handler.dispatchMessage(Handler.java:106)
	at android.os.Looper.loopOnce(Looper.java:205)
	at android.os.Looper.loop(Looper.java:294)
	at android.app.ActivityThread.main(ActivityThread.java:8177)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971)
Caused by: java.lang.NullPointerException
	at skip.foundation.URL._appendingPathComponent(URL.kt:322)
	at skip.foundation.URL.appendingPathComponent(URL.kt:325)
	at skip.kit.DocumentPickerKt.withDocumentPicker$lambda$0$0$0(DocumentPicker.kt:70)
	at skip.kit.DocumentPickerKt.$r8$lambda$Vm3zC9ewPCRJx8qmmgJErRWE_Rw(Unknown Source:0)
	at skip.kit.DocumentPickerKt$$ExternalSyntheticLambda2.invoke(D8$$SyntheticClass:0)
	at androidx.activity.compose.ActivityResultRegistryKt.rememberLauncherForActivityResult$lambda$4$0$0(ActivityResultRegistry.kt:104)
	at androidx.activity.compose.ActivityResultRegistryKt.$r8$lambda$3CvmGOvkwZLY6ksF4ULs20ma2UE(Unknown Source:0)
	at androidx.activity.compose.ActivityResultRegistryKt$$ExternalSyntheticLambda2.onActivityResult(D8$$SyntheticClass:0)
	at androidx.activity.result.ActivityResultRegistry.doDispatch(ActivityResultRegistry.kt:350)
	at androidx.activity.result.ActivityResultRegistry.dispatchResult(ActivityResultRegistry.kt:311)
	at androidx.activity.ComponentActivity.onActivityResult(ComponentActivity.kt:788)
	at androidx.fragment.app.FragmentActivity.onActivityResult(FragmentActivity.java:152)
	at android.app.Activity.dispatchActivityResult(Activity.java:8943)
	at android.app.ActivityThread.deliverResults(ActivityThread.java:5520)
	at android.app.ActivityThread.handleSendResult(ActivityThread.java:5566) 
	at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:67) 
	at android.app.servertransaction.ActivityTransactionItem.execute(ActivityTransactionItem.java:45) 
	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139) 
	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96) 
	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2443) 
	at android.os.Handler.dispatchMessage(Handler.java:106) 
	at android.os.Looper.loopOnce(Looper.java:205) 
	at android.os.Looper.loop(Looper.java:294) 
	at android.app.ActivityThread.main(ActivityThread.java:8177) 
	at java.lang.reflect.Method.invoke(Native Method) 
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:552) 
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:971) 

[marcprux]

Fixes #31