Guard against infinite values for upload task

Shared/Realm/Realm+BookPlayer.swift

@@ -12,7 +12,22 @@ import RealmSwift
 extension Object {
   func toDictionaryPayload() -> [String: Any] {
     return objectSchema.properties.reduce(into: [:]) { dict, property in
-      dict[property.name] = self.value(forKeyPath: property.name)
+      var value = self.value(forKeyPath: property.name)
+
+      /// Sanitize infinite values
+      if let doubleValue = value as? Double,
+         !doubleValue.isFinite {
+        switch property.name {
+        case "speed", "lastPlayDateTimestamp":
+          value = nil
+        case "currentTime", "duration", "percentCompleted":
+          value = 0.0
+        default:
+          break
+        }
+      }
+
+      dict[property.name] = value
     }
   }
 }