Formatting

src/freedombone-pass

     total_padding=$((128 - str_length))
     leading_padding=$((1 + RANDOM % $total_padding))
     trailing_padding=$((total_padding - leading_padding))
-    leading=printf "%-${leading_padding}s"
-    trailing=printf "%-${trailing_padding}s"
+    leading=$(printf "%-${leading_padding}s")
+    trailing=$(printf "%-${trailing_padding}s")
     echo "${leading}${pass_string}${trailing}"
 }