rewind outBuffer before it is returned

Author: yash-puligundla

src/main/java/htsjdk/samtools/cram/compression/rans/rans4x8/RANS4x8Decode.java

@@ -123,7 +123,7 @@ private ByteBuffer uncompressOrder0Way4(final ByteBuffer inBuffer, final ByteBuf
                 break;
         }
 
-        outBuffer.position(0);
+        outBuffer.rewind();
         return outBuffer;
     }
 

src/main/java/htsjdk/samtools/cram/compression/rans/ransnx16/RANSNx16Decode.java

@@ -161,7 +161,7 @@ private ByteBuffer uncompressOrder0WayN(
             remSize --;
             reverseIndex ++;
         }
-        outBuffer.position(0);
+        outBuffer.rewind();
         return outBuffer;
     }