clear code

iOSClient/Security/NCEndToEndEncryption.m

@@ -816,8 +816,7 @@ cleanup:
     NSString *input = [self base64Decode:inputData];
     
     NSMutableString *result = [NSMutableString stringWithString: input];
-
-    for(long i=substringLength;i<=input.length+1;i++) {
+    for(long i=substringLength;i<=result.length+1;i++) {
         [result insertString: @"\n" atIndex: i];
         i+=substringLength;
     }