Wrap freeDialogs call inside a finally block

For instance, LocalDateTime.parse could fail,
and then the dialogs would be leaked.

app/src/main/java/dev/lonami/talaria/data/DialogRepository.kt

@@ -16,6 +16,7 @@ class NativeDialogRepository : DialogRepository {
         val dialogs = mutableListOf<Dialog>()
 
         val dialogPtr = Native.getDialogs()
+        try {
             val dialogCount = Native.dialogCount(dialogPtr)
             for (i in 0 until dialogCount) {
                 dialogs.add(
@@ -40,7 +41,9 @@ class NativeDialogRepository : DialogRepository {
                     )
                 )
             }
+        } finally {
             Native.freeDialogs(dialogPtr)
+        }
 
         return dialogs
     }