Fix build error due to protobuf value changing from int to long.

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/eventregistration/checkins/qrcode/QRCodeVerifyResult.kt

@@ -8,8 +8,8 @@ data class QRCodeVerifyResult(
     val singedTraceLocation: SignedEventOuterClass.SignedEvent
 ) {
     fun isBeforeStartTime(now: Instant): Boolean =
-        singedTraceLocation.event.start != 0 && singedTraceLocation.event.start > now.seconds
+        singedTraceLocation.event.start != 0L && singedTraceLocation.event.start > now.seconds
 
     fun isAfterEndTime(now: Instant): Boolean =
-        singedTraceLocation.event.end != 0 && singedTraceLocation.event.end < now.seconds
+        singedTraceLocation.event.end != 0L && singedTraceLocation.event.end < now.seconds
 }

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/ui/eventregistration/attendee/checkin/VerifiedTraceLocation.kt

@@ -21,8 +21,8 @@ fun QRCodeVerifyResult.toVerifiedTraceLocation() =
     with(singedTraceLocation.event) {
         VerifiedTraceLocation(
             guid = guid.toByteArray().toByteString().base64(),
-            start = start.instant(),
-            end = end.instant(),
+            start = start.toInstant(),
+            end = end.toInstant(),
             description = description,
             defaultCheckInLengthInMinutes = defaultCheckInLengthInMinutes
         )
@@ -31,5 +31,5 @@ fun QRCodeVerifyResult.toVerifiedTraceLocation() =
 /**
  * Converts time in seconds into [Instant]
  */
-private fun Int.instant() =
-    if (this == 0) null else Instant.ofEpochMilli(TimeUnit.SECONDS.toMillis(toLong()))
+private fun Long.toInstant() =
+    if (this == 0L) null else Instant.ofEpochMilli(TimeUnit.SECONDS.toMillis(this))