Removes the annoying messages "dropped privs to nobody" displayed on
the first line.

--- ./tcpdump.c.orig	2015-11-06 16:44:58.816103497 +0100
+++ ./tcpdump.c	2015-11-06 16:45:00.572113404 +0100
@@ -759,7 +759,9 @@
 			fprintf(stderr, "error : ret %d\n", ret);
 		}
 		else {
+#if 0
 			fprintf(stderr, "dropped privs to %s\n", username);
+#endif
 		}
 #else
 		if (initgroups(pw->pw_name, pw->pw_gid) != 0 ||
@@ -772,7 +774,9 @@
 			exit(1);
 		}
 		else {
+#if 0
 			fprintf(stderr, "dropped privs to %s\n", username);
+#endif
 		}
 #endif /* HAVE_LIBCAP_NG */
 	}