Fix def for stdc format macros to match existing code.

src/lib/launchdetection/CatapultLaunchMethod.cpp

@@ -41,7 +41,7 @@
 
 #include "CatapultLaunchMethod.h"
 #include <systemlib/err.h>
-#define __STDC_FORMAT_MACROS 1
+#define __STDC_FORMAT_MACROS
 #include <inttypes.h>
 
 namespace launchdetection