Fixed model for DataInput

Co-authored-by: Marcono1234 <Marcono1234@users.noreply.github.com>

Author: 2 people

java/ql/lib/semmle/code/java/frameworks/JavaIo.qll

@@ -15,8 +15,8 @@ private class JavaIoSummaryCsv extends SummaryModelCsv {
         "java.io;CharArrayWriter;true;toCharArray;;;Argument[-1];ReturnValue;taint",
         "java.io;ObjectInput;true;read;;;Argument[-1];Argument[0];taint",
         "java.io;DataInput;true;readFully;;;Argument[-1];Argument[0];taint",
-        "java.io;DataInput;true;readLine;();;Argument[-1];Argument[0];taint",
-        "java.io;DataInput;true;readUTF;();;Argument[-1];Argument[0];taint",
+        "java.io;DataInput;true;readLine;();;Argument[-1];ReturnValue;taint",
+        "java.io;DataInput;true;readUTF;();;Argument[-1];ReturnValue;taint",
         "java.nio.channels;ReadableByteChannel;true;read;(ByteBuffer);;Argument[-1];Argument[0];taint",
         "java.nio.channels;Channels;false;newChannel;(InputStream);;Argument[0];ReturnValue;taint"
       ]