liblzma: Add block_buffer_encoder.h into Makefile.inc.
This should have been in b465da5988dd59ad98fda10c2e4ea13d0b9c73bc.
diff --git a/src/liblzma/common/Makefile.inc b/src/liblzma/common/Makefile.inc
index dd5a8c8..7643276 100644
--- a/src/liblzma/common/Makefile.inc
+++ b/src/liblzma/common/Makefile.inc
@@ -24,6 +24,7 @@
liblzma_la_SOURCES += \
common/alone_encoder.c \
common/block_buffer_encoder.c \
+ common/block_buffer_encoder.h \
common/block_encoder.c \
common/block_encoder.h \
common/block_header_encoder.c \
