Fix AndroidOS.Parcel NDK compatibility

Author: colemancda

Sources/AndroidOS/ParcelNDK.swift

@@ -10,7 +10,7 @@
 import Android
 #endif
 import SwiftJava
-import CSwiftJavaJNI
+import SwiftJavaJNICore
 import struct AndroidBinder.Parcel
 
 // MARK: - NDK Parcel
@@ -25,7 +25,9 @@ public extension AndroidOS.Parcel {
     /// Create a temporary NDK object and perform operatios on it.
     @available(Android 30, *)
     func withNDK<E, Result>(_ body: (borrowing NDK) throws(E) -> Result) throws(E) -> Result where E: Error {
-        let ndk = NDK.fromJava(javaThis, environment: javaEnvironment)
+        guard let ndk = NDK.fromJava(javaThis, environment: javaEnvironment) else {
+            fatalError("Unable to create NDK type")
+        }
         return try body(ndk)
     }
 }