protobuf: fixed compilation on ARM

The constant 4294967295 isn't replaced with 0xFFFFFFFF
in a generated source.
Signed-off-by: Alexander Kartashov <alekskartashov@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

protobuf/Makefile

@@ -78,7 +78,7 @@ $(obj)/%.pb-c.c $(obj)/%.pb-c.h: $(obj)/%.proto $(obj)/%.proto.c.d
 	$(E) "  PBCC    " $@
 	$(Q) protoc-c --proto_path=$(obj)/ --c_out=$(obj)/ $<
 ifeq ($(ARCH),arm)
-	$(Q) sed -i 's/4294967295/0xFFFFFFFF/g' $@ $(patsubst %c,%h,$@)
+	$(Q) sed -i -e 's/4294967295/0xFFFFFFFF/g' $@ $(patsubst %.h,%.c,$@)
 endif
 
 $(obj)/%.o: $(obj)/%.pb-c.c $(obj)/%.pb-c.h