find_stray_empty_lines: make it work

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

scripts/find_stray_empty_lines

@@ -7,11 +7,13 @@ grep -n -B1 -r $'^\t*}' . | grep -A1 '.[ch]-[0-9]*-$'
 grep -n -A1 -r $'^\t*{' . | grep -B1 '.[ch]-[0-9]*-$'
 
 # find trailing empty lines
-find -type f | xargs tail -n1 | while read file; do
+find -type f | while read file; do
         test x"$file" = x"" && continue
-        read lastline
+        tail -n1 $file | while read lastline
+        do
           #echo "|$file|$lastline"
           if test x"$lastline" = x""; then
                 echo "$file"
           fi
+        done
 done