[Bugfix] Extend encoding range checks to handle negative encodings well.


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4113 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rfb/ConnParams.cxx b/common/rfb/ConnParams.cxx
index 9bfc302..3ee3708 100644
--- a/common/rfb/ConnParams.cxx
+++ b/common/rfb/ConnParams.cxx
@@ -129,7 +129,7 @@
 	       encodings[i] <= pseudoEncodingQualityLevel9) {
       noJpeg = false;
       qualityLevel = encodings[i] - pseudoEncodingQualityLevel0;
-    } else if (encodings[i] <= encodingMax && Encoder::supported(encodings[i]))
+    } else if (Encoder::supported(encodings[i]))
       currentEncoding_ = encodings[i];
   }
 }