don't break switch order independence

diff --git a/lib/common/args.c b/lib/common/args.c
index 509094a83e7e1b85a5511021e438f332ac3cf30e..78c6c13c1c32de3ec0f42f77bccec0a2f4997cc6 100644 (file)
--- a/lib/common/args.c
+++ b/lib/common/args.c
@@ -61,7 +61,7 @@ neato_extra_args(GVC_t *gvc, int argc, char** argv)
           }
         }
         else Nop = 1;
-       PSinputscale = POINTS_PER_INCH;
+       if (PSinputscale == 0) PSinputscale = POINTS_PER_INCH;
         break;
       default :
         cnt++;