[HB] Rename hb-font.c to hb-font.cc
diff --git a/src/Makefile.am b/src/Makefile.am
index ea2c294..f2a6f1d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,7 +10,7 @@
 	hb-blob.c \
 	hb-buffer.c \
 	hb-buffer-private.h \
-	hb-font.c \
+	hb-font.cc \
 	hb-font-private.h \
 	hb-private.h \
 	hb-open-file-private.hh \