Aperture: Fix broken exception msg

Change-Id: I9cae44c9638c418f809078e2866cf0bbfab47714
diff --git a/app/src/main/java/org/lineageos/aperture/MainActivity.kt b/app/src/main/java/org/lineageos/aperture/MainActivity.kt
index 0d2f19f..0257b37 100644
--- a/app/src/main/java/org/lineageos/aperture/MainActivity.kt
+++ b/app/src/main/java/org/lineageos/aperture/MainActivity.kt
@@ -704,7 +704,7 @@
         aspectRatioButton.text = when (sharedPreferences.aspectRatio) {
             AspectRatio.RATIO_4_3 -> "4:3"
             AspectRatio.RATIO_16_9 -> "16:9"
-            else -> throw Exception("Unknown aspect ratio $sharedPreferences.aspectRatio")
+            else -> throw Exception("Unknown aspect ratio ${sharedPreferences.aspectRatio}")
         }
     }