[Buildroot] [PATCH] support/scripts/size-stats: avoid divide-by-zero

[Andrey Yurovsky <yurovsky@gmail.com>]

Some packages (ex: skeleton-init-systemd) have a zero size so we cannot
divide by the package size. In that case make their percent zero
explicitly and avoid a ZeroDivisionError exception.

Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com>
---
 support/scripts/size-stats | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/support/scripts/size-stats b/support/scripts/size-stats
index af45000359..3ff2a1ce18 100755
--- a/support/scripts/size-stats
+++ b/support/scripts/size-stats
@@ -178,9 +178,17 @@ def gen_files_csv(filesdict, pkgsizes, outputf):
                      "File size in system (%)"])
         for f, (pkgname, filesize) in filesdict.items():
             pkgsize = pkgsizes[pkgname]
+
+            if pkgsize == 0:
+                percent_pkg = 0
+            else:
+                percent_pkg = float(filesize) / pkgsize * 100
+
+            percent_total = float(filesize) / total * 100
+
             wr.writerow([f, pkgname, filesize, pkgsize,
-                         "%.1f" % (float(filesize) / pkgsize * 100),
-                         "%.1f" % (float(filesize) / total * 100)])
+                         "%.1f" % percent_pkg,
+                         "%.1f" % percent_total])
 
 
 #
-- 
2.14.3