Various small cleanups.

Fix a return type.  Note start-of-cycle in some test loads.
Consolidate -DGNU_SOURCE loads.

1 files changed, 0 insertions, 1 deletions

diff --git a/tsip.c b/tsip.c
index 0874173e..04c5e19d 100644
--- a/tsip.c
+++ b/tsip.c
@@ -6,7 +6,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#define __USE_ISOC99	1	/* needed to get log2() from math.h */
 #include <math.h>
 #include "gpsd.h"
 #include "bits.h"