external/libmspub: Work around -fsanitize=enum

Change-Id: Icf1d45b1cd171e868a15f841258c5368a0b213e1

external/libmspub/UnpackedTarball_libmspub.mk

@@ -11,4 +11,10 @@ $(eval $(call gb_UnpackedTarball_UnpackedTarball,libmspub))
 
 $(eval $(call gb_UnpackedTarball_set_tarball,libmspub,$(MSPUB_TARBALL)))
 
+$(eval $(call gb_UnpackedTarball_set_patchlevel,libmspub,0))
+
+$(eval $(call gb_UnpackedTarball_add_patches,libmspub,\
+    external/libmspub/ubsan.patch \
+))
+
 # vim: set noet sw=4 ts=4:

external/libmspub/ubsan.patch

@@ -0,0 +1,12 @@
+--- src/lib/MSPUBContentChunkType.h
++++ src/lib/MSPUBContentChunkType.h
+@@ -27,7 +27,8 @@
+   CELLS      = 0x63,
+   FONT       = 0x6C,
+   IMAGE_2K, //these don't exist in Pub 2k3 so their value in the enum is not used.
+-  IMAGE_2K_DATA
++  IMAGE_2K_DATA,
++  MSPUBContentChunkType_dummy=0xFF // MSPUBParser.cpp:2359:9: runtime error: load of value 138, which is not a valid value for type 'libmspub::MSPUBContentChunkType'
+ };
+ } // namespace libmspub
+