libtrellis: Fix missing break in SPI mode Bitstream decode

Signed-off-by: Jens Andersen <jens.andersen@gmail.com>

libtrellis/src/Bitstream.cpp

diff --git a/libtrellis/src/Bitstream.cpp b/libtrellis/src/Bitstream.cpp
index b0a4275..afaefc2 100644
--- a/libtrellis/src/Bitstream.cpp
+++ b/libtrellis/src/Bitstream.cpp
@@ -382,6 +382,7 @@
 
                 BITSTREAM_NOTE("SPI Mode " <<  spimode->first);
             }
+                break;
             case BitstreamCommand::JUMP:
                 rd.skip_bytes(3);
                 BITSTREAM_DEBUG("Jump command");