free: ensure there is a least one space between numbers

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/procps/free.c b/procps/free.c
index e41601e..ee0cd98 100644
--- a/procps/free.c
+++ b/procps/free.c
@@ -124,9 +124,9 @@
 	cached += info.bufferram;
 	cached_plus_free = cached + info.freeram;
 
-#define FIELDS_6 "%12llu%12llu%12llu%12llu%12llu%12llu\n"
-#define FIELDS_3 (FIELDS_6 + 3*6)
-#define FIELDS_2 (FIELDS_6 + 4*6)
+#define FIELDS_6 "%12llu %11llu %11llu %11llu %11llu %11llu\n"
+#define FIELDS_3 (FIELDS_6 + 6 + 7 + 7)
+#define FIELDS_2 (FIELDS_6 + 6 + 7 + 7 + 7)
 
 	printf(FIELDS_6,
 		scale(&G, info.totalram),                //total