Fixed typo in LzmaFrameEncoder constructor

Motivation:

A discovered typo in LzmaFrameEncoder constructor when we check `lc + lp` for better compatibility.

Modifications:

Changed `lc + pb` to `lc + lp`.

Result:

Correct check of `lc + lp` value.

codec/src/main/java/io/netty/handler/codec/compression/LzmaFrameEncoder.java

@@ -144,7 +144,7 @@ public class LzmaFrameEncoder extends MessageToByteEncoder<ByteBuf> {
         if (pb < 0 || pb > 4) {
             throw new IllegalArgumentException("pb: " + pb + " (expected: 0-4)");
         }
-        if (lc + pb > 4) {
+        if (lc + lp > 4) {
             if (!warningLogged) {
                 logger.warn("The latest versions of LZMA libraries (for example, XZ Utils) " +
                         "has an additional requirement: lc + lp <= 4. Data which don't follow " +