Fixes translation crash

app/src/main/java/net/pokeranalytics/android/ui/fragment/SubscriptionFragment.kt

@@ -102,8 +102,10 @@ class SubscriptionFragment : BaseFragment(), SkuDetailsResponseListener, Purchas
 			val ssb = SpannableStringBuilder(upgradeString)
 
 			val indexOfLastSpace = upgradeString.lastIndexOf(" ")
-			val end = upgradeString.chars().count().toInt()
 
+			if (indexOfLastSpace >= 0) {
+
+				val end = upgradeString.chars().count().toInt()
 				val lightTypeFace = ResourcesCompat.getFont(requireContext(), R.font.roboto_light)
 				val boldTypeFace = ResourcesCompat.getFont(requireContext(), R.font.roboto_bold)
 
@@ -111,6 +113,7 @@ class SubscriptionFragment : BaseFragment(), SkuDetailsResponseListener, Purchas
 					ssb.setSpan(TypefaceSpan(lightTypeFace), 0, indexOfLastSpace, Spanned.SPAN_EXCLUSIVE_INCLUSIVE)
 					ssb.setSpan(TypefaceSpan(boldTypeFace), indexOfLastSpace, end, Spanned.SPAN_EXCLUSIVE_INCLUSIVE)
 				}
+			}
 
 			this.title.text = ssb