format-patch: allow --range-diff to apply to a lone-patch

diff --git a/Makefile b/Makefile
index 72f16882e61dfc06e06a6b81fc38b42bd62fc0c5..12e3c2d8653e489775dee22a62ada97e7c46bc28 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -874,6 +874,7 @@ LIB_OBJS += linear-assignment.o
 LIB_OBJS += help.o
 LIB_OBJS += hex.o
 LIB_OBJS += ident.o
+LIB_OBJS += interdiff.o
 LIB_OBJS += kwset.o
 LIB_OBJS += levenshtein.o
 LIB_OBJS += line-log.o