Whitespace change for better readability.

From-SVN: r17767

gcc/cplus-dem.c

@@ -31,6 +31,7 @@ Boston, MA 02111-1307, USA.  */
 #include <ctype.h>
 #include <string.h>
 #include <stdio.h>
+
 #ifdef HAVE_STDLIB_H
 #include <stdlib.h>
 #endif