util: make size macros unsigned

By making them unsigned comparing them with other sizes is less likely
to trigger compiler warnings regarding signed/unsigned comparisons.
After all sizes (i.e. size_t) are generally assumed to be unsigned, so
these should be too.

Prompted-by: https://github.com/systemd/systemd/pull/17345#issuecomment-709402332

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cgtop/cgtop.c b/src/cgtop/cgtop.c
index 042d83c495..0b6c2f88ed 100644
--- a/src/cgtop/cgtop.c
+++ b/src/cgtop/cgtop.c
@@ -586,7 +586,7 @@ static void display(Hashmap *a) {
         Group **array;
         signed path_columns;
         unsigned rows, n = 0, j, maxtcpu = 0, maxtpath = 3; /* 3 for ellipsize() to work properly */
-        char buffer[MAX3(21, FORMAT_BYTES_MAX, FORMAT_TIMESPAN_MAX)];
+        char buffer[MAX3(21U, FORMAT_BYTES_MAX, FORMAT_TIMESPAN_MAX)];
 
         assert(a);