Fix jpegoptim with v7 emulation as well


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@568 632fc199-4ca6-4c93-a231-07263d6284db
diff --git a/jcmaster.c b/jcmaster.c
index 74df555..3ca346c 100644
--- a/jcmaster.c
+++ b/jcmaster.c
@@ -75,7 +75,9 @@
   JDIMENSION jd_samplesperrow;
 
 #if JPEG_LIB_VERSION >= 70
+#if JPEG_LIB_VERSION >= 80
   if (!transcode_only)
+#endif
     jpeg_calc_jpeg_dimensions(cinfo);
 #endif